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Instructions for installing slanted sunshade louvers using double-layered ASA-coated wood-plastic composite slats.
Kosmos' double-layered ASA-coated wood-plastic composite slats (box slats) are commonly used for sunshade pergolas, pergolas, signage, and curtain walls. They have a lifespan of up to 15 years and are backed by a 3-year quality guarantee from Kosmos.
6 things to keep in mind when constructing ASA wood-plastic composite boxes. or:
- Insert the U-shaped steel bar into the slat.
- The box sections are constructed on a frame with spacing between the support bars ≤100cm (≤1m).
- The slats and the ribs are connected together through L-shaped iron brackets by stainless steel screws.
- The box must be pre-drilled before fixing through the skeleton.
- The distance between 2 slats when connected is about 5mm.
- The slats need to be 10mm away from the wall and wall corners.

Step 1: Prepare materials and tools for constructing the ASA box louver sunshade.
Supplies
Below are 8 types of materials you need to prepare:
- Stainless steel or galvanized steel bar
- U-shaped steel
- ASA coated 2-layer wood plastic slats (L-ASA25X50, L-ASA50X50, L-ASA100X50, L-ASA150X50)
- Bar end cap (NL-ASA25X50, NL-ASA50X50, NL-ASA100X50, NL-ASA150X50)
- Iron plate L
- Iron anchor
- Stainless steel screw with pee tail
- Code.

Note on how to use iron bracket L:
L-shaped iron bracket is made from 304 stainless steel with 2 round holes and 2 elliptical holes in 1 bracket.
- Round hole: Secure the L-shaped bracket to the wall or to a stainless steel or galvanized steel support beam.
- Elliptical bore: Secure the L-shaped bracket onto the slat.
Refer to the image below for screw positions for the iron bracket. In addition, any direction of the iron bracket (long, short) when placed on the wall/frame or slat is fine.

Tool
Here are 6 essential tools for installing sunshade louvers made of double-layered ASA-coated wood-plastic composite:
- Angle grinder, drill, welder
- Laser pointer, tape measure, protractor.

Step 2: Measure, cut, and insert the U-shaped steel into the ASA wood-plastic composite slats.
| ASA Kosmos wood plastic slat code | Size of U-shaped steel bar with core thread |
| L-ASA25X50 | 41x16mm, 0,8mm thick |
| L-ASA50X50 | 41x40mm, 0,8mm thick |
| L–ASA100X50 | |
| L-ASA150X50 |

The U-shaped steel core is inserted into the louver. It needs to be moved back about 2cm at one end. in order to create space for Close the cap at the end of the rod..

Step 3: Cover the end of the ASA plastic wood box slats
Cover the end of the slat with the slat end cap and then put the cap into the slat box and it's done.
Step 4: Build the skeleton
Column section
- Welding stainless steel or galvanized steel bars with brackets
- Fix the bracket to the concrete floor with 12mm iron anchors for security.
The 3 popular types of codes today include code 160, code 120, code 100.
Roof
Weld four bracing beams to the column, with a maximum spacing of 3000 mm. Next, weld the middle beams, with a maximum spacing of 1000 mm. The beams are aligned and securely welded in place before installing the louver system.

Step 5: Install the 2-layer ASA-coated wood-plastic composite slats onto the roof.
This step is accomplished through the following three smaller steps:
- Measure and mark the positions where the L-shaped brackets will be installed on the support beam (this distance depends on the user's needs). Then, pre-drill pilot holes and use 304 stainless steel screws to secure the L-shaped brackets to the support beam.
1.1. Use a template of a guide bar to mark the position for installing the first L-shaped bracket on the inner bracing beam.

1.2. Drill pilot holes, then screw the first L-shaped stainless steel bracket to the inner bracing beam with a screw.

1.3. Starting from the first L-shaped bracket, install the subsequent L-shaped brackets in a straight line, arranging them evenly according to the marked row, with the spacing depending on the intended use.

2. Install the first louvered bar.
2.1. Place the first slat in the correct position, then mark the mounting points for the L-shaped brackets on the frame.

2.2. Drill pilot holes and use stainless steel screws to fix the L-shaped brackets to the support beam at the marked positions.

2.3. Place the box louver onto the L-shaped brackets already installed. At the position of the inner bracing beam, use stainless steel screws to secure the U-shaped steel core and the L-shaped bracket. Then, push the louver approximately 10mm away from the bracing beam.

2.4. Screw stainless steel screws through the elliptical holes of the L-shaped bracket to secure the slat to the bracket.

3. Do the same for the remaining slats until the end of the project.

** Kosmos recommends:
When connecting 2 slats together, a gap must be left to avoid cracking due to expansion when used outdoors. If the ambient temperature is higher than 5℃ when installing the slats, the allowable gap is 3mm, if lower than 5℃, the allowable gap is 5mm.
In addition, a 10mm gap should be left between the slats and other obstacles (walls, corners, etc.) for the same reason.

Every 3-6 months, the project needs to be checked and periodically maintained to ensure the best lifespan of the project. If any abnormalities are detected in screws or slats, the construction unit must be notified immediately.

Note: Instructions are for reference only. To have the most suitable construction plan, it is necessary to survey the specific project and come up with an optimal construction solution.
In addition to being used as sunshades, Outdoor wood-plastic composite slats with a double ASA coating are also used for decorative facade cladding..










