On-Q Legrand - OnQ Cable Management, In-Wall Media Box, Dual Purpose Structured Wiring Enclosure, TV Home Theater Recessed Storage Box, 17 Inch, White, ENP1700NA

I wanted my living room to look like a gallery wall, not a server closet. To pull that off with a wall‑mounted TV—especially a Samsung Frame—you need a tidy way to hide the power, streaming boxes, and wiring. The On‑Q 17‑inch in‑wall media box has become my go‑to solution for that problem. After installing it behind a few TVs and one new fireplace build-out, here’s what stood out.

What it is and why it works

The On‑Q media box is a recessed enclosure that fits between studs to hold small AV gear and structured wiring right behind the TV. Think Apple TV, Roku, a slim cable box, a One Connect box for Samsung Frame, a compact router, or a small network switch. Because the material is Wi‑Fi transparent, wireless gear still performs well inside the cavity. A low‑profile split cover and a clean trim ring finish the install, letting the TV sit flush without exposing a rough drywall cut.

In short, it moves the mess into the wall—without creating new headaches.

Design and build

The enclosure is molded plastic: rigid enough to mount solidly, slightly flexible so it doesn’t crack with minor framing irregularities. The 17‑inch height hits a sweet spot for the common “hide the essentials” use case. I’ve fit a Frame TV One Connect box comfortably with room left for HDMI, power, and airflow. Smaller streamers and power bricks tuck into the corners without crowding.

A few design details that help:
- The trim ring masks imperfect drywall cuts and gives a clean, finished look.
- The split cover lets you remove just one half to access gear, even with a TV close to the wall.
- Knockouts and mounting points help with power and low‑voltage segregation.

Is it pretty inside? No—and that’s fine. This is a utility box. But on the wall, it looks tidy and professional.

Installation experience

I’ve installed the 17‑inch box in both new construction and retrofits. In new builds, it’s as simple as framing for it, running your wires, and fastening to studs. In finished walls, I marked a level rectangle, cut with a drywall saw, and fastened the enclosure to the studs on either side.

Tips that saved time:
- Plan the TV mount height and the box opening together. The goal is to keep the enclosure centered behind the TV but low enough that the mount and arms won’t block the split cover.
- Confirm your studs are 16 inches on center. The box is designed to land between them. If they’re off, you may need to add blocking.
- Dry fit with the trim ring before final screws. That ensures the face sits flush and square.

I appreciate that the box doesn’t protrude in a way that interferes with low-profile mounts. I’ve used it behind thin tilting and fixed mounts, including SANUS units, with no clearance issues.

Power and code considerations

Power deserves its own section. You can’t run a standard TV power cord inside the wall. The correct way is to install an in‑wall rated power relocation kit or a properly mounted electrical box with code-compliant wiring. The enclosure provides locations to mount a single‑gang box at the bottom or side, but be aware:

• The plastic cutouts and hole patterns don’t align with every old-work bracket or specialty outlet. I’ve had to drill pilot holes or use different screws to get a snug, code‑compliant fit.
• Keep high-voltage and low-voltage areas separated. Don’t let line voltage conductors mingle loosely with HDMI or Ethernet inside the cavity.
• If you’re not comfortable with electrical, hire a licensed electrician. It’s a small addition to the project that prevents costly mistakes.

Once the power piece is sorted, routing HDMI and network cabling is straightforward. The enclosure’s edges and knockouts don’t chew up cables, and the split cover makes it easy to pass a single slim cable out to the TV.

Device fit and thermals

Thermal management is often overlooked in tight cavities. This box has enough volume that small streamers and the Samsung One Connect box don’t cook themselves. I leave a little airspace around powered devices and avoid stacking power bricks directly on top of electronics. The plastic construction doesn’t act as a heat sink, but in practice I haven’t seen thermal throttling on Apple TV, Roku, or Frame setups.

If you plan to put a full-size router inside, check dimensions and antenna orientation. Compact gateways have worked fine for me, and Wi‑Fi performance remained surprisingly strong thanks to the non‑metallic enclosure. For larger routers with external antennas, I prefer to keep them in an adjacent closet and only run Ethernet to the TV box to maintain peak wireless performance.

Living with the split cover

The split cover is the unsung hero here. With a TV mounted, you can often slide off one half of the cover to access a streamer, press a pairing button, or swap a cable without removing the display. It saves a lot of hassle in tight spaces and was crucial behind a fireplace where pulling the TV off the mount is a two‑person job.

One note: the cover has a low profile for a reason. Don’t overstuff the box and then expect the cover halves to snap on perfectly. Use short, right-angle HDMI connectors where possible and coil extra cable carefully.

Mount compatibility and clearance

I’ve had good luck pairing this box with slim fixed and tilting wall mounts. For full‑motion mounts, check the swing path so the arms don’t collide with the trim ring. With a Samsung Frame, the cavity and cover sit shallow enough that the TV remains flush as intended. If you use a recessed AV box that’s too proud, a Frame will tell on you immediately. This one passes that test.

Limitations and small annoyances

No product is perfect. Here’s what to expect:
- Electrical accessory alignment: The molded holes and cutouts don’t match every electrical bracket. Plan to drill small pilots or use screws with larger heads for a secure fit.
- Depth planning: The cavity is generous for small devices, but long HDMI heads and power bricks add up. Right‑angle adapters and short patch cables make a cleaner fit.
- Not a rack: If you need shelves, modular plates, or active cooling, look to a deeper structured media enclosure. This is meant for point-of-use storage, not whole‑home distribution.

Sizing and alternatives

The 17‑inch size is the Goldilocks choice for hiding the essentials behind a typical 55–75 inch TV. If your device list is minimal—say, just a small streamer and a power inlet—the smaller sizes in the lineup can work. If you want to add a network switch, an OTA tuner, and a hub, step up to a larger box or a full structured media panel in a nearby closet and run a single HDMI and power to the TV location.

Who it’s for

• Samsung Frame owners who want a true flush look without visible cabling.
• Anyone mounting a TV above a fireplace or in a clean “no furniture below” layout.
• DIYers comfortable with cutting drywall and basic low‑voltage work; pros who need a predictable, clean finish.

Who should look elsewhere:
- Users needing rack‑like organization or active cooling.
- Situations where all power must remain outside the wall due to local code or building constraints.

Practical setup recipe

• Choose the 17‑inch box for a One Connect or multiple small devices.
• Mark and cut the opening, verify stud location, and fasten the box level.
• Install a code‑compliant power solution inside the enclosure; separate high and low voltage.
• Use short, certified HDMI 2.1 cables and right‑angle adapters for clearance.
• Route the TV’s data/power umbilical thoughtfully; use the split cover to pass it cleanly.
• Snap on the trim ring last for a crisp finish.

Recommendation

I recommend the On‑Q 17‑inch in‑wall media box for anyone aiming for a clean, furniture‑free TV installation, especially Samsung Frame owners. It fits the common device stack, plays nicely with slim mounts, keeps Wi‑Fi usable, and its split cover and trim ring make both the install and future access painless. The only caveat is the power hardware alignment—it isn’t perfectly standardized, so expect minor tweaks or a quick assist from an electrician. If you can handle that small hurdle, this enclosure is a dependable, tidy way to make the technology disappear and the picture take center stage.