1. Introduction
The Chief TA500 Thin Stall In-Wall Box is designed to provide a recessed storage solution for AV equipment and cable management behind flat panel displays. This allows for a clean, flush-to-wall installation of the display, concealing unsightly cables and components within the wall cavity. The TA500 is compatible with Chief TS525 and TS32 series mounts, offering an integrated solution for professional AV installations.
This manual provides essential information for the safe and correct installation, operation, and maintenance of your Chief TA500 In-Wall Box. Please read all instructions thoroughly before beginning installation.
2. Safety Information
- Professional Installation Recommended: Installation of in-wall components requires knowledge of building construction and electrical systems. If you are unsure about any part of the installation process, consult a qualified professional.
- Wall Structure Verification: Ensure the wall structure where the box will be installed can safely support the weight of the in-wall box, the display mount, the display, and any installed AV equipment.
- Electrical Safety: When routing electrical cables, adhere to all local electrical codes. Ensure power is disconnected before working with electrical wiring.
- Cable Management: Properly route and secure all cables to prevent pinching, damage, or interference.
- Ventilation: Ensure adequate ventilation for any electronic equipment installed within the box to prevent overheating.
- Sharp Edges: Exercise caution during installation as metal components may have sharp edges.
3. Package Contents
Verify that all components are present before beginning installation:
- Chief TA500 Thin Stall In-Wall Box
- Mounting Hardware (screws, washers, etc.)
- Installation Template (if included)
Note: Additional tools and equipment (e.g., drywall saw, drill, level, stud finder, display mount, AV components) are sold separately and are required for a complete installation.
4. Setup and Installation
Follow these steps for proper installation of the Chief TA500 In-Wall Box:
4.1. Planning and Location Selection
- Determine Mounting Location: Choose a location on the wall that is free of electrical wires, plumbing, and other obstructions. Use a stud finder to locate wall studs. The box is designed to fit between standard 16-inch on-center studs.
- Verify Wall Type: This in-wall box is typically installed in drywall or similar wall materials. Ensure the wall material can support the weight.
- Consider Display Placement: Position the box so that the display mount (sold separately) will be centered correctly behind your flat panel display.
4.2. Preparing the Wall Opening
- Mark the Opening: Use the provided installation template (if applicable) or measure the dimensions of the box to mark the cutout area on the wall. Ensure the markings are level.
- Cut the Opening: Carefully cut along the marked lines using a drywall saw or appropriate cutting tool. Exercise caution to avoid damaging existing wiring or pipes within the wall.
- Inspect the Cavity: After cutting, inspect the wall cavity for any hidden obstructions.

Figure 4.1: Front view of the Chief TA500 Thin Stall In-Wall Box, showing its internal structure and mounting points. This image illustrates the box's design for recessed installation.
4.3. Installing the In-Wall Box
- Route Cables: Before inserting the box, route any necessary power, video, and audio cables into the wall cavity and through the designated knockouts or cable pass-throughs on the in-wall box.
- Insert the Box: Carefully insert the Chief TA500 In-Wall Box into the prepared wall opening. Ensure it sits flush with the wall surface.
- Secure the Box: Use the provided mounting hardware to secure the box to the wall studs or drywall. Follow the specific instructions for your wall type to ensure a secure and stable installation.

Figure 4.2: The Chief TA500 Thin Stall In-Wall Box shown with a Chief TS525TU display mount installed inside. This demonstrates how a compatible mount integrates within the recessed space, allowing for a flush display installation.
4.4. Installing Display Mount and Equipment
- Mount Installation: Install your compatible Chief display mount (e.g., TS525, TS32 series) directly into the TA500 In-Wall Box according to the mount's specific instructions. The box provides the necessary mounting points.
- Equipment Placement: Place AV components (e.g., media players, cable boxes, power conditioners) into the recessed space provided by the box.
- Cable Management: Connect all necessary cables, ensuring they are neatly routed and secured within the box to prevent interference or damage.
- Final Checks: Before mounting the display, double-check all connections and ensure the box and mount are securely fastened.
5. Operating Instructions
The Chief TA500 Thin Stall In-Wall Box is a passive component designed to house and conceal AV equipment and cables. It does not have active operational controls. Once installed, its function is to provide a secure, recessed space for your AV setup, enabling a clean and professional appearance for your wall-mounted display.
Access to the components within the box is typically achieved by removing the display from its mount, or by accessing through the display mount's service features, if available.
6. Maintenance
- Cleaning: The exterior of the in-wall box can be cleaned with a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Periodic Inspection: Periodically inspect the mounting hardware and cable connections to ensure they remain secure.
- Ventilation: Ensure that any ventilation openings on the box or installed equipment are not obstructed.
7. Troubleshooting
As a passive component, the Chief TA500 In-Wall Box has limited troubleshooting scenarios. Most issues will relate to installation or the equipment housed within.
- Box Not Sitting Flush:
- Check for obstructions within the wall cavity.
- Verify the wall opening dimensions match the box.
- Equipment Overheating:
- Ensure adequate airflow around components.
- Do not block ventilation holes on the box or equipment.
- Cables Not Fitting:
- Re-route cables for better organization.
- Ensure cable bend radius is not too tight.
For issues related to the display mount or AV equipment, refer to their respective instruction manuals.
8. Specifications
| Model Number | TA500 |
| Brand | Chief |
| Product Dimensions | 3.96 x 34 x 21.75 inches (H x W x D) |
| Weight | 41.6 Pounds |
| Material | Metal |
| Color | Black |
| Style | Compact |
| Finish Type | Black |
| Country of Origin | Switzerland |
9. Warranty and Support
For warranty information, technical support, or assistance with your Chief TA500 Thin Stall In-Wall Box, please contact Chief customer service or visit the official Chief website. Keep your purchase receipt for warranty claims.
Chief Customer Support: www.legrandav.com/brands/chief





