If you're planning to run cables through walls, ceilings, or other hidden spaces, using in-wall rated cables is essential. These cables are designed to meet fire safety standards and building codes. Using the wrong type can be unsafe and may even void your insurance or fail inspections.
When Should You Use In-Wall Cables?
You should use in-wall cables if:
- You're routing cables behind drywall
- You're installing cables between floors
- You're running cables through air ducts or ceilings
For exposed or temporary setups, standard cables are fine.
What Do the Ratings Mean?
Here’s a quick breakdown of the most common in-wall cable ratings:
- CL2: Safe for residential in-wall use. Offers basic flame resistance.
- CL3: Suitable for commercial or higher voltage installations. Offers higher flame resistance than CL2.
- CMR: Designed for vertical runs between floors (riser spaces). Helps prevent flames from traveling upward.
- CMP: Required for air ducts and plenum spaces. Offers the highest level of fire resistance.
Always check your local building codes to confirm which rating is required for your project.
Common Types of In-Wall Cables
HDMI Cables
In-wall rated HDMI cables are great for home theaters and wall-mounted TVs. They support high resolutions like 4K and 8K and are built to last.
Speaker Wire
Available in different thicknesses (like 12AWG or 16AWG), in-wall speaker wire is perfect for clean audio setups in walls or ceilings.
Ethernet and Coaxial Cables
Use in-wall rated Ethernet or coaxial cables for networking, security cameras, or cable TV installations.
Helpful Accessories
To complete your setup, consider using low-voltage wall plates. These help organize and protect your cables where they exit the wall. They’re easy to install and come in different styles and colors.
Quick Reference
Use in-wall cables when:
- Running cables behind walls or ceilings
- Installing between floors
- Routing through air ducts
Use standard cables when:
- Cables are exposed or temporary
Need Help?
Monoprice offers a wide selection of in-wall rated cables and accessories. If you're unsure which one to choose, our support team is here to help.