Installation Instructions

Installing Q-Sox Fabric Duct Systems is Fast, and Easy:

Lite-Trak Rail® Suspension

Installation Sequence For Lite-Trak Rail® Suspension (Click for complete details...)

PREPARATION
Q-Sox woven cloth ducts should be installed only after all construction activity including sanding, painting, cleaning, touch-up and debris removal is complete. Q-Sox should NOT be installed until the jobsite, equipment, and personnel have been thoroughly cleaned to protect the Q-Sox appearance.

IMPORTANT - The air supply system should be purged and a minimum 35% pre-filter installed BEFORE the cloth duct is installed. Otherwise the duct will collect the dust resident in the blower and plenum system.

Unpack Hardware.  Specific installation instructions, parts list and drawings as well as hardware for the project are included.

Unpack fabric boxes only after the Lite-Trak® rail and suspension hardware has been mounted to the building and you are ready to attach the cloth duct sections. This will prevent soiling the cloth duct during the cable mounting procedure.

Each duct box will have assembly instructions about the location for that specific duct (if there is more than one duct assembly). Fabric Duct Systems will factory package each duct section in sequential order to facilitate mounting each duct assembly. Each duct is made up of one or more sections from 10 feet to 22 feet long. These duct sections will facilitate washing the duct in industrial washing machines.

EACH DUCT SECTION MUST BE ASSEMBLED IN THE EXACT SEQUENTIAL ORDER PRESCRIBED ON THE DRAWINGS. THIS ORDER MUST BE MAINTAINED WHEN THE DUCTS ARE LATER REMOVED FOR WASHING AND RE-INSTALLED.

Tools necessary for installation include:

  • Pencil
  • Chalk Line
  • Tape Measure
  • Power Drill and Drill Bits
  • Plumb Bob
  • Cutter for 1/16” Wire Cable
  • Level
  • 5/16” Nut Driver/Socket

Materials NOT provided for installation:

  • Fasteners/anchors to attach suspension cable to ceiling.

Lite-Trak Rail Layout

  1. Layout the proper number of 10 foot Lite-Trak Rails on the floor for the entire duct run.
  2. Cut the last Rail section to obtain the correct length for the overall duct run. Remove burrs or sharp edges from the Rail ends. SAVE THE REMAINING RAIL PIECE FOR USE ON OTHER DUCT RUNS.
  3. The Lite-Trak®  can be mounted to vertical cable hangers or directly to the ceiling or rafters. EITHER Hanger Clips OR Ceiling Anchor Plate Assemblies are provided for these mounting alternatives.
  4. Insert and position Hanger Clip & Cable Assemblies (or Ceiling Anchor Plate Assemblies) into the top slots of the appropriate Rail sections at 7 foot intervals along the Rail. Then position ONE Hanger Clip & Cable Assembly (or ONE Ceiling Mount Assembly) at each end of the overall duct run
  5. It is now time to splice together the Lite-Trak® Rail sections for the entire duct run.

Lite-Trak Rail – Splicing Rail Sections

  1. Insert Splice Bar HALFWAY into one Lite-Trak section. Using a 5/16” Nut Driver or Socket wrench, tighten down the two self-tapping hex head screws. These screws will jam fit  the Splice Bar and penetrate the Lite-Trak. DO NOT PENETRATE THROUGH THE RAIL INTO THE LOWER CHANNEL. THIS WILL IMPEDE THE WEBBED GLIDERS FROM SLIDING IN THE LOWER CHANNEL
  2. Slide the adjacent Lite-Trak® section onto the Splice Bar. Mate the end of both Lite-Trak sections carefully and tightly together. It is essential that the joints of each 10’ Lite-Trak Rail section be aligned to permit the smooth insertion of the webbed Gliders into the lower channel of the Lite-Trak® Rail.
  3. Tighten the two screws into that section.
  4. Repeat for each Lite-Trak® section until the designed total Rail length is completed.
  5. Now re-position each Hanger Clip (or Ceiling Anchor Plate Assembly) in the Rail and rotate the Hanger Clip 90° to secure the Hanger Clip to the Rail. Hanger Clips and Crimped cables are provided for every seven feet of Rail.

Mounting the Lite-Trak Rail to Vertical Suspension Cables.

  1. The circular slot in the Lite-Trak Rail must be aligned with the centerline of sheet metal outlet. The entire Rail length should be parallel to the closest wall for aesthetic reasons.
  2. The suspension cables for the entire duct run must be secured to the ceiling at the 6 to 8 foot intervals set on the Lite-Trak Rail. These crimped 1/16” cable lengths and the Dyna-Tite Cable Locks® are provided with the hardware from Fabric Duct Systems. Ceiling or beam fasteners are provided by the installation contractor.
  3. Suspending the Lite-Trak from the ceiling must be done carefully so as not to bend or twist the Spliced Lite-Trak® Rail Assembly.
  4. With two or more workers, raise the Lite-Trak.  NOTE: It may be advantageous to UNSPLICE 10 foot sections to more conveniently install the Lite-Trak and then RESPLICE the sections after suspension.
  5. Make sure the Lite-Trak Rail Assembly is level over its entire length by adjusting the Dyna-Tite Cable Locks to the proper elevation.

Additional Lite-Trak Rail Installation Images

Additional Installation Notes:

  • Q-Sox woven cloth ducts should be installed only after all construction activity including sanding, painting, cleaning, touch-up and debris removal is complete.
  • Q-Sox should NOT be installed until the Air Supply Units and connecting sheet metal have been thoroughly cleaned and the filtration elements installed.
  • Failure to perform these correct installation procedures may void product warranty.

FABRIC DUCT HANGING PROCEDURE
Handle the cloth duct sections with clean hands. Insure that all installation tools are also clean and free of oil and dirt.

  1. Install each section of the Q-Sox cloth duct into the circular slot of the Lite-Trak Rail beginning at the plenum outlet. Start with the last Duct Section with the End Cap end and work in reverse order.
  2. If the duct is designed with Gliders, slide the gliders sequentially into the lower channel of the Rail. Pull the duct along the Rail as each Glider is installed in the Rail.
    If the design incorporates a Beaded Vinyl Welt on the top of the fabric duct, compress the circular Bead into the Mounting Rail. DO NOT USE ANY SHARP OR POINTED TOOL – the eraser end of a wood pencil is ideal. Do this for the entire length of the duct Section. When the entire duct is installed, the Beaded Vinyl Welt will slide easily within the Rail channel.
  3. DO NOT ALLOW THE FABRIC DUCT TO TOUCH OR DRAG ACROSS THE FLOOR.
  4. When all sections have been attached to the extrusion, the several duct sections may then be connected to each other at their Zipper/Velcro® joints (unless the entire duct run has been assembled at the factory beforehand). This is best accomplished by starting at either the top seam where the beaded welt is attached to the duct. Smooth out any bumps or wrinkles as you work around the circumference to connect the entire joint. If the cloth duct has incorporated a continuous slotted vent (for increased air flow), insure that the slots on each duct section are aligned with the slots on the adjoining duct sections.
  5. Secure the open hemmed end of the fabric duct to the metal output duct with the Anchor Belt. The installation is then complete.

FINAL ADJUSTMENT

  1. Stretch Glider at end of each duct to insure the duct is extended to its full length.
  2. Drill 0.172” diameter pilot hole in bottom channel. Align with center of white Glider.
  3. Install #10 x ½” Self-tapping Sheet Metal Screw to secure the Glider in position.

Washing and Maintenance Instructions
For Q-Sox Coated Polyester Ducts with Orifices or Linear Vents

In order to ensure long term and optimum distribution of air, it is necessary to keep the Q-Sox® fabric ducts free from dirt and dust. Effective maintenance will ensure that the ducts supply the required quantity of air and also an optimum service life.

Cleaning the Outside Duct Surface
Over time, dust will accumulate on the exterior surface of the coated polyester fabric. If the room ambient air has not experienced greasy contaminants, this brown/grey dust can be easily removed by vacuuming with the aid of a medium stiff bristle (non-metallic) brush. The air supply system must be “OFF” and both sides of the drooping duct can be easily vacuumed while the duct is suspended.

Washing
Should vacuuming and brushing not be effective to remove exterior dirt, the ducts must be unzipped in sections and removed from the rail or cable suspension system.

There are two methods depending on convenience or the equipment available:

Spray clean with a hose & nozzle using a bristle brush and mild detergent, or
Using a commercial size washing machine.

Before spraying or laundering, first turn each duct section INSIDE OUT. Spray the linear mesh vents to insure debris is removed and not clogging the mesh. This is not necessary with ducts having punched orifices larger than 1/2 inch diameter,

Then turn the duct right side out and proceed:

  • Pre-rinse: 104°F for 10 minutes
  • Do NOT add any softener, as this will influence the surface characteristics of the Q-Sox duct.
  • Wash: 104°F for 20 minutes; Use Mild detergent, no bleach
  • Rinse thoroughly after washing.
  • Wash and drip dry and immediately install the Q-sox fabric ducts.
  • OBSERVE TO REINSTALL THE DUCTS IN THE CORRECT SEQUENTIAL ORDER.

CLICK HERE to download a PDF of Lite-Trak Rail® Suspension Installation Instructions (English).
CLICK HERE to download a PDF of Lite-Trak Rail® Suspension Installation Instructions (Chinese).

Q-Sox Cable Suspension

Installation Sequence For Q-Sox Cable Suspension (Click for complete details...)

1. INSTALL CABLE –Fabric ducts are typically suspended by horizontal cable anchored to the building. .125” X .187” vinyl clad steel cable is standard.

Align the cable with the plenum outlet horizontally and vertically. See below for alignment details.
Install a turnbuckle and thimble on the cable to tighten it. A 3/8” x 10” turnbuckle is supplied for each cable length. Four Cable Clamps and two Thimbles are included for each cable run.

2. INSTALL AIR DUCT – The first step is to hang the Fabric duct on the cable(s). Each duct is furnished with plastic or metal Snap Hooks attached to the Fabric duct usually at 6 feet intervals, typically at 12 o’clock. The Fabric duct is hung by attaching the Snap Hooks to the cable. Installation is quite easily accomplished and just as easily removed, if necessary.

Snap Hooks can be furnished on BOTH top and bottom (12 & 6 o’clock) OR left and right (3 & 9 o’clock) of a Fabric duct. This option makes it easy to turn the Fabric duct over and change the direction of the air exhaust ports. For example, unheated makeup air can be directed upward in winter and downward in summer.

3. ATTACH AIR DUCT TO THE PLENUM OR TRUNK SUPPLY DUCT – Slide the open end of the Fabric duct over the plenum orifice and then attach the Anchor Belt. Tighten the ratchet to secure the Fabric duct to the outlet.

4. TURN ON THE FAN – This is a test run to check out the Fabric duct and its alignment to the airflow.

5. FINE TUNE ALIGNMENT – Typically, it is necessary to make adjustments to the alignment of the Fabric duct to the airflow. Alignment is CRITICAL along the first 20 to 30 feet from the plenum outlet. The violent air turbulence caused by the fan can damage the Fabric duct it is not properly aligned. If the Fabric duct bounces severely or if the Fabric duct wall flutters or flaps, the Fabric duct is poorly aligned to the airflow.

  1. To align the Fabric duct, move the cable either left, right, up or down. If the Fabric duct is flapping along the bottom, a simple adjustment of the first 20 to 30 feet of the cable will solve the problem. Install a vertical hanger 20 to 30 feet from the outlet attachment to raise the cable and align the Fabric duct with the airflow.
  2. If there is excessive cable sag over the length of the Fabric duct, additional vertical hangers should be installed at 15 to 20 foot intervals. The hangers can be light chain or cable. Attachment of the hanger to the cable should be easily removable, such as an “S” hook or Snap Hook. Location of each vertical hanger should be determined during the test run. Never install vertical hangers before the Fabric duct has been hung and tested.
  3. It may also be possible to eliminate the Fabric duct wall flapping by pulling the Fabric duct at the closed end. The stretched Fabric duct should be secured with a light cable or chain.
  4. If pipes, beams, etc. prevent good alignment, an air straightener would be needed at the plenum outlet.

Cable Attachment Assembly

  1. Mount 2 Eye Bolts to opposite walls or other permanent vertical members at the correct height above floor level.
  2. Open Thimble and attach to Turnbuckle eye.
  3. Unscrew Turnbuckle hook and eye ends to approximately 9 inches (23 cm).
  4. Slide two Cable Clamps onto cable and loop Cable around Thimble and back through the two Cable Clamps with at least 6 inches (15 cm) overlap. Align two Cable lengths and tighten Cable Clamp #1 in close proximity to the Thimble.
  5. Tighten Cable Clamp #2 similarly.
  6. Attach Turnbuckle to Eye Bolt and run cable to the opposite wall. Eye Bolts or Screw Eyes are provided by GC or installing contractor.
  7. Run cable to opposite wall and repeat cable attachment process as above.
  8. When Cable has been installed, tighten Turnbuckles at both walls to level entire cable length.
  9. Vertical supports must now be installed at approximately 15 feet intervals (4.5 M) along the Cable length to support Cable and Q-Sox duct.

Cable Mounting Terminations
Brackets and Eyebolt Supports are NOT supplied by Fabric Duct Systems

Cable Vertical Support Methods
Brackets and Eyebolt Supports are NOT supplied by Fabric Duct Systems

Cable Termination Mounting for concrete or concrete block walls.
Brackets and Eyebolt Supports are NOT supplied by Fabric Duct Systems

Q-Sox woven cloth ducts should be installed only after all construction activity including sanding, painting, cleaning, touch-up and debris removal is complete.

Q-Sox should NOT be installed until the Air Supply Units and connecting sheet metal have been thoroughly cleaned and the filtration elements installed.

Failure to perform these correct installation procedures may void product warranty.

Washing and Maintenance Instructions For Q-Sox Coated Polyester Ducts with Orifices or Linear Vents:

In order to ensure long term and optimum distribution of air, it is necessary to keep the Q-Sox® fabric ducts free from dirt and dust. Effective maintenance will ensure that the ducts supply the required quantity of air and also an optimum service life.

Cleaning the Outside Duct Surface
Over time, dust will accumulate on the exterior surface of the coated polyester fabric. If the room ambient air has not experienced greasy contaminants, this brown/grey dust can be easily removed by vacuuming with the aid of a medium stiff bristle (non-metallic) brush. The air supply system must be “OFF” and both sides of the drooping duct can be easily vacuumed while the duct is suspended.

Washing
Should vacuuming and brushing not be effective to remove exterior dirt, the ducts must be unzipped in sections and removed from the rail or cable suspension system.
There are two methods depending on convenience or the equipment available:

  • Spray clean with a hose & nozzle using a bristle brush and mild detergent, or
  • Using a commercial size washing machine.

Before spraying or laundering, first turn each duct section INSIDE OUT. Spray the linear mesh vents to insure debris is removed and not clogging the mesh. This is not necessary with ducts having punched orifices larger than 1/2 inch diameter,

Then turn the duct right side out and proceed:

  • Pre-rinse: 104° F for 10 minutes
  • Wash: 104°F for 20 minutes; Use Mild detergent, no bleach
  • Rinse thoroughly after washing.
  • Do NOT add any softener, as this will influence the surface characteristics of the Q-Sox duct.
  • Wash, spin-dry, OR drip dry and immediately install the Q-sox fabric ducts.
  • Otherwise, the Q-Sox fabric ducts may be tumbled dry with a MAXIMUM hot air temperature of 110°F.
  • OBSERVE TO REINSTALL THE DUCTS IN THE CORRECT SEQUENTIAL ORDER.

Guide Specifications for Q-Sox® Air Distribution Systems

  1. General: Q-Sox is a fabric duct system that insures even and draft- free air distribution. Along with the pre-filter on the unit, the Q-Sox will also act as a second filter. The Q-Sox is for cooling, heating, refrigeration and ventilation. The total surface of the fabric duct is the air outlet. The air seeps through the fabric at a very low velocity, and thereby decreases draft to a minimum. Other systems utilize punched orifices and coated fabrics.
  2. Modes of Operation: Q-Sox duct is custom designed for each application and fabricated, inspected, and shipped in sections by the manufacturer. The Q-Sox comes in round, half-round and quarter-round shapes. Q-Sox is fabricated of polyester or Trevira CS. When sizing the Q-Sox, the inlet velocity in the Q-Sox should always be kept under 1600 FPM. If the inlet velocity is between 1600 and 1900 FPM a SRD (static regain diffuser, supplied by Q-Sox, Inc.) should be included. If the inlet velocity exceeds 1900 FPM, the diameter of the Q-Sox should be increased.
  3. Unit Requirements: To insure proper inflation, the static pressure supplied by the air handling unit should be at least 1⁄2” WG. Q-Sox can be installed either horizontally or vertically. If heating and cooling are done on the same system, the room dimensions along with the exhaust are located. If the air returns are high and the height of the room is more than I0 feet, a linear slot diffuser should be included in the Q-Sox.
  4. Unit Description: Q-Sox duct is designed with a Velcro (or zipper) joint for every 16 feet of duct length. Q-Sox ducts hang from 1/8” vinyl coated cable (or rail.) Connection to cable or rail is with snap hooks or gliders. Hooks for connections to wire are spaced every 24”. Glider connections to rails are also spaced every 24". If the diameter of the Q-Sox duct exceeds 24”, double cable or rail suspension is recommended. This is to insure that there is as little movement of the Q-Sox duct as possible.
  5. Installation: Cable installation: The cable (1/8” diameter coated) is suspended across the ceiling, tightened with the turnbuckles (turnbuckles on both ends if the length exceeds 100 feet). Q- Sox ducts are connected to the cable with the snap clips and to the plenum with the Anchor Belt. Vertical (cable) supports and clamps must be provided every 15 feet by the contractor for vertical support of the 1/8” horizontal suspension cable. Vertical supports should be fabricated on the job site by the installation contractor. Fabric Duct Systems, Inc. will supply horizontal suspension cable (or rail), cable clamps, turnbuckles, eyebolts, and Anchor Belts. Cable-to-ceiling mounting fasteners such as hooks, eyes, or beam clamps shall be provided and installed by the installation contractor. The installation is completed.
    Rail installation: Fabric Duct Systems, Inc. shall provide 10’ rail sections for field splicing, cutting, installation and assembly by the contractor. The rail is attached to the ceiling with 1/16” suspension cable and Hanger Blocks. The Q-Sox ducts are connected to the rail with the gliders and to the plenum with the Anchor Belt. The installation is completed.
  6. Execution: Q-Sox should be installed as shown on the plans only after all construction activity including sanding, painting, cleaning, touch-up, and debris removal is complete. Q-Sox should NOT be installed until the job sight, equipment, and personnel have been thoroughly cleaned to protect the Q- Sox appearance. To protect the Q-Sox cloth duct, it is most important to install a minimum 35% pre-filter in the air handling system prior to the installation of Q-Sox system.
  7. Testing & Balancing: The Q-Sox duct system is designed and custom manufactured, and will be balanced from the manufacturer, according to the user approved required specifications. The completed installation shall be balanced by measuring the airflow at the air-handling unit. Testing can be performed as per the following directions: The CFM, airflow velocity and the static pressure can be measured at every Velcro/zipper connection (usually every 16 to 20 feet). With this information it can be calculated as to how much air is distributed along the Q-Sox duct. Adding smoke to the air entering the Q-Sox can perform a visual test. The pattern of the air leaving the Q-Sox is thereby determined.
  8. Maintenance: The Q-Sox is washable. The Q-Sox should be pre-washed, washed and rinsed at 104° F, inside out, whenever the static pressure inside the Q-Sox duct has increased more than 50%. Q-Sox with a linear slot diffuser should be washed once every second year.
  9. Approval & Classification: Q-Sox is classified by Underwriters Laboratory as an Air Distribution Device, and meets requirements set by the NFPA 90A-1993. USDA: Q-Sox is acceptable for use in all federally inspected Meat and Poultry plants.
  10. Warranty: Q-Sox woven cloth ducts are warranted to be free from manufacturing defects, one year from date of original manufacture.
  11. Options: Q-Sox can be offered with the following features: custom color, custom logo. Tees, Off-sets, and Elbows are also available in fabric for a uniform design layout.
  12. Unit Manufacturer: Unit Manufacturer is Fabric Duct Systems, Inc., located at 1127 Riverwood Drive Burnsville, Minnesota, 55337, USA. Sales representatives are located strategically throughout the USA and internationally.

CLICK HERE to download a PDF of Q-Sox Cable Suspension Installation Instructions (English).

Q-Sox Half-Round Fabric Ducts

Installation Sequence For Q-Sox Half-Round Fabric Ducts (Click for complete details...)

Tools Required:

  • Pencil
  • Tape measure
  • Chalk Line
  • Stud Finder (for sheet rock ceilings with joists above)
  • Power cut-off saw
  • Round file – fine cut to trim burrs on the aluminum extrusion rails
  • Power Drill, Pilot Hole Bit, Screw Driver Bits

Materials Required:

  • Q-Sox custom designed 44” diameter half-round cloth duct Sections with Glider Trak mounting.
  • Aluminum Extrusion Mounting Rail 10-foot sections

Supplied by installer:

  • Round Head Machine Screws #8-32” or larger.
  • #8-32 anchors for gypsum panels or concrete ceilings; use appropriate sheet metal screws for mounting to suspended acoustical tile Tee bars.

NOTE: Each Duct Run is packaged with its respective, consecutive, zippered  section (s).

Construction Sequence
Installation is completed in three phases:

  1. Locating two parallel aluminum Mounting Rails on the ceiling outward from the air supply duct; marking and drilling the Rails and inserting the ceiling anchor fasteners. Fastening the Mounting Rails firmly to the ceiling.
  2. Sliding and positioning the duct run sections into the Mounting Rails
  3. Attach the Collar around the periphery of the sheet metal air inlet duct. Attach Anchor Belt and secure clamp over fabric Collar.

Phase I.

  1. Use full-length Mounting Rail sections, cutting only the last rail section to fit the required duct length.
  2. IMPORTANT – When a Mounting Rail is cut, REMOVE ALL BURRS AND SHARP EDGES ON THE ENDS OF BOTH CUT ALUMINUM PIECES, PARTICULARLY ON THE INSIDE EDGE OF THE CIRCULAR PORTION OF THE EXTRUSION.
  3. Save all cut off Mounting Rail sections for use on other appropriate places throughout the installation. Aluminum Mounting Rail required for the job is supplied in 10-foot sections.
  4. With a tape measure, mark equal distances left and right of the centerline of the inlet duct. Mark TWO parallel chalk lines into the room for the length of the duct. Make sure these two parallel chalk lines are perpendicular to the sheet metal inlet/wall! These two chalk lines will mark the line of ceiling anchor holes to be drilled AFTER the Mounting Rails have been drilled in step 6. See attached drawing.
  5. FOR GYPSUM OR CONCRETE CEILINGS - When the Mounting Rail sections are cut to length for the entire duct run, start at THE AIR INLET END of the Mounting Rails and drill 3/16” holes in the flanges every 24 inches of both left and right Mounting Rails.  These mounting holes are located 5/16” from the outside edge of the flange. NOTE THE FLANGES POINT AWAY FROM THE DUCT CENTERLINE!FOR ACOUSTICAL TILE CEILINGS WITH TEE BAR SUSPENSION  - Clamp the Mounting Rail sections to the Tee Bar grid and mark the Rail flanges where the Rail and Tee bars intersect. Unclamp Rails and drill appropriate size holes through flange at the Tee bar mark for a #8 sheet metal screw.
  6. Now with the drilled Mounting Rails, center the Rail holes over the chalk line and mark the ceiling where the ceiling anchors are to be located. Do this for both Rails and chalk lines.
  7. Attach both parallel Mounting Rails firmly in place to the ceiling.

Phase II.

  1. Next, open the FIRST Duct Section to full length. Start at the end of the installed double rails and work toward the inlet  WITH THE FIRST DUCT SECTION. Slide the Gliders on each side of the duct into the Rails and pull the duct toward the sheet metal inlet.
  2. After the first duct section is installed in the Rails, prepare the next mating fabric duct section. Zipper each duct section together BEFORE attaching the Gliders to the Rails. This will facilitate zippering the sections together rather than attempting to zipper after attaching the sections to the Rails.
  3. Now begin attaching the other duct sections in sequence into their respective duct runs.

Phase III.

  1. After all duct sections have been zippered together, slide the Anchor Belt over and around the SM inlet duct and clamp tight.
  2. Turn on the air flow fan.
  3. Stretch the duct at the End Cap and install sheet metal screws into the rail to secure the two End Cap Gliders. See the Final Adjustment attached photograph.

FINAL ADJUSTMENT

  1. Stretch Glider at end of each duct to insure the duct is extended to its full length.
  2. Drill 0.172” diameter pilot hole in bottom channel.   Align with center of white Glider.
  3. Install #10 x ½” Self-tapping Sheet Metal Screw to secure the Glider in position.

CLICK HERE to download a PDF of Q-Sox Half-Round Installation Instructions (English).