What Is In-Wall Wire Concealment?
In-wall wire concealment means fishing cables vertically through a wall inside a single stud bay — the cavity between two vertical wall studs. It’s the most common way to hide TV wires when your AV components (cable box, Blu-ray player, gaming console, streaming device) sit on a component stand or entertainment unit below a wall-mounted TV.
Picture the drywall stripped away so you can see the studs behind it. Low-voltage cables — HDMI, RCA, component video — get fished from the back of the TV, straight down through the wall inside that same stud bay, and exit near the floor where they plug into your components. It’s a direct point-A-to-point-B run, not a horizontal detour through multiple studs.
In-Wall Wire Concealment Examples
Here’s what a finished in-wall wire concealment installation looks like in practice, including how the power cord is routed separately and safely.
Which Walls Allow In-Wall Wire Fishing?
Not every wall has a cavity cables can travel through. Whether you can fish wires in-wall comes down entirely to what’s behind the drywall — or whether there’s drywall at all.
Walls You Can Fish Cables Through
- Drywall with wooden studs (newer houses and townhomes)
- Interior plaster walls with wooden studs (older houses and older buildings)
- Drywall with metal studs (condos, newer apartments, lofts, and commercial buildings)
- Custom-built walls with a cavity
Walls You Cannot Fish Cables Through
- Concrete walls (common in condos, apartments, lofts, and commercial buildings)
- Brick walls
- Exterior plaster walls (older homes and buildings)
- Cinderblock walls
- Cement walls
None of the walls above have a cavity for cables to pass through. If your wall falls into this category, your best option is on-wall wire management with a paintable wire raceway instead.
Wall construction varies by build type and era, but the rule of thumb is simple: any wall with wood or metal studs usually has enough cavity to fish wires through, as long as plumbing, fire blocks, ventilation, or other obstructions aren’t in the way.
Newer Homes vs. Older Homes
In newer houses and townhomes, running wires in-wall is rarely a problem. In older homes — typically built in the 1970s or earlier — you can usually fish cables through interior walls only. Interior walls in older homes have wooden studs behind plaster and lath, leaving room to run cable. Exterior walls in older homes, by contrast, often have only thin wooden strapping behind the plaster and brick, with no real cavity to work with — so fishing wires there means cutting into the wall.
Condos, Apartments, Lofts & Commercial Buildings
Most newer condos, apartments, lofts, and commercial buildings are built on a concrete structure — concrete walls, floors, and ceilings — with drywall over metal studs used only to partition interior rooms.
How do you tell if a wall is concrete or drywall? Knock on it. Concrete produces a high-pitched, solid sound that’s fairly inconsistent across the wall, and a stud finder will give you false or erratic readings since there are no studs to detect. Drywall over metal studs has a deeper tone, sometimes with a slight echo, and a stud finder will pick up studs consistently — usually 16 inches apart on-center.
In-wall wire concealment isn’t possible on concrete, brick, or most exterior plaster walls, since there’s no cavity to fish cable through. If that describes your wall, wire raceway is still a clean, effective way to manage cables on the surface.
What Kind of Cables Can You Hide In-Wall?
Any low-voltage audio, video, or data cable that’s rated for in-wall use can be concealed this way. There are two main fire-safety ratings for in-wall or in-ceiling installation:
- FT4 (CM / CMG / CMR — also known as Riser rated)
- FT6 (CMP — also known as Plenum rated)
For residential cable runs, FT4-rated cable is sufficient in nearly every case. In commercial buildings, FT4/CMR rated cable can be used in riser spaces, while FT6/CMP rated cable is required in plenum spaces. The most common low-voltage cables for a TV setup — HDMI, component, composite, RCA, coax, and Ethernet — are all available FT4 rated, and FT6 rated versions can be special-ordered when needed. In-wall rated cable has its fire rating printed directly on the jacket, and it’s made from materials designed to resist fire and produce minimal smoke.
Important: flexible power cords — including a TV’s power cord — are not low-voltage cables, and they’re never allowed inside a wall.
Power Cords Cannot Be Hidden In-Wall
Power cords aren’t low-voltage cable, and hiding one inside a wall is a fire-code violation, not just a bad idea. Cords that can never be run in-wall include:
- TV power cords
- Soundbar power cords
- Power cords for any other electronics
- Power extension cords of any kind
The only code-compliant way to hide a TV power cord out of sight is to plug it into an electrical outlet installed behind the TV, so the cord stays hidden behind the screen rather than inside the wall.
Use a Bridge-Style Power Kit If You Don’t Have an Existing Outlet
If your home wasn’t pre-wired for a wall-mounted TV, you likely don’t have a power outlet already sitting high on the wall behind where the TV will hang. In that situation, the fix isn’t necessarily hiring an electrician for a brand-new outlet — that requires a permit, a city inspection, and added cost. It’s an even bigger job if there’s no outlet directly below to jump power from, since running a new circuit across the wall means cutting the drywall open to drill through the center of every stud in the way.
A Bridge-Style Power Kit solves this by routing power safely through the wall without running new house wiring — install it once and the power problem is solved for good.
Once the TV is mounted and cables are fished down through the wall, all you need is a stand or piece of furniture below it to conceal where the cables exit — and the whole installation reads as completely wireless. For a full breakdown of wall mounting itself, see our TV wall mount installation guide, or explore home theater design and installation if you’re planning a larger room around it.
