What Are Low Voltage Brackets?

Low voltage brackets, sometimes called low voltage mounting brackets or plaster rings, are non-metallic or light-duty mounting frames that fasten to drywall or framing and provide a finished opening for low voltage devices and wall plates. Unlike a standard electrical box, the back is open. That open design makes them useful where cable bulk, connector depth, or bend radius would make a shallow box awkward. They are commonly used for Ethernet, coaxial cable, speaker wire, HDMI extenders, alarm cable, intercom, thermostat cable, and similar systems. They are not a substitute for a box where line-voltage conductors, splices, or devices requiring an enclosed box are involved.

Where Are Low Voltage Brackets Used?

These brackets are used in residential, commercial, and institutional interiors anywhere a low voltage wall termination is needed. Common examples include TV locations, structured cabling drops, telecom rooms, office workstations, boardrooms, classrooms, reception desks, security keypads, access control stations, and smart home control points. In houses and condos, they are often used behind wall-mounted TVs, beside receptacles for data drops, and at thermostat or alarm keypad locations. In commercial fit-ups, multi-gang brackets are often chosen where several jacks, couplers, or control interfaces need to share one plate area.

How To Choose Low Voltage Brackets

Start with installation stage. For finished walls, old work brackets with swing tabs or flip ears are usually the fastest option. For open framing, new work brackets that nail or screw to the stud help keep the opening aligned before drywall goes on. Next, choose gang count based on the plate and future capacity. A single data jack may only need 1-gang, but a TV wall with data, coax, speaker, and control cabling may justify 2-gang or larger. Also check the wall material. Most common brackets are intended for drywall; if the wall is masonry, tile over backer, or another non-standard assembly, mounting method matters. Finally, think about cable management. Larger connectors, service loops, and minimum bend radius often make a larger opening the better trade choice even if the initial plate count is small.

Trade Rules Of Thumb

As a typical rule of thumb, use old work brackets for retrofit drops in finished drywall and new work brackets when the stud bay is open. For a single Cat6 or coax outlet, 1-gang is commonly enough, but if multiple cables, baluns, couplers, or future additions are likely, moving up to 2-gang often saves a return trip. For TV and media walls, many installers prefer a larger opening than the immediate device count suggests because connector depth and cable bend space become the real constraint. Keep low voltage openings separated from line-voltage devices unless the assembly is specifically designed and listed for combined use. These are practical selection habits, not code substitutes, and local requirements should always be confirmed.

Sizing Guidelines

Sizing is mainly about plate format, cable count, and usable opening area rather than ampacity. A 1-gang bracket suits many single-plate terminations such as one to four keystone ports, a coax plate, or a brush-style pass-through. A 2-gang bracket is often a better fit for media walls, workstation drops, or grouped control devices. If the installation includes stiff cable, large connectors, or several service loops, choose the larger bracket to reduce crowding and stress on terminations. For retrofit work, verify the cutout can be made without hitting studs, fire blocking, plumbing, or existing electrical boxes. Where cable bend radius matters, especially with data and coax, leave enough open cavity space behind the plate and avoid forcing the cable into a tight turn. Final layout and separation should follow manufacturer instructions and applicable Canadian electrical and communications requirements.

Common Installation Practices

On retrofit jobs, installers usually mark the plate height, scan the wall cavity, cut the opening carefully, pull the cable with enough slack for termination, and secure the old work bracket so the flange sits flat to the drywall. On new work, the bracket is fixed to the stud at the planned device height before board goes up. Good practice is to keep the bracket square, avoid over-tightening tabs against fragile drywall, and leave enough cable length for re-termination or plate replacement. For data and AV work, many crews rough in the bracket first, then pull cable after confirming the pathway is clear. Where multiple systems share a location, labelling the cables before trim-out saves time and reduces mispatching.

Common Mistakes

A common mistake is using a low voltage bracket where a proper electrical box is required. Another is choosing too small an opening for the connector package, especially behind TVs or at workstation clusters. Installers also run into trouble when they cut too close to a stud, place the bracket where a plate will interfere with millwork, or fail to account for the depth needed by couplers and keystone modules. On retrofit work, over-tightening old work tabs can crack drywall or distort the bracket. On data jobs, poor cable routing behind the opening can create tight bends, strain terminations, or make future service difficult.

Brand Comparisons

Arlington is widely recognized in this category and is commonly chosen when installers want a familiar format with broad field acceptance. Ortech and Kora are also practical options for standard low voltage rough-in and retrofit work, especially where the goal is a straightforward bracket for common drywall applications. The right choice often comes down to the exact style needed, such as old work versus new work, gang count, flange shape, and how the bracket fits the plate system already being used on site. If a project already has one brand installed throughout, matching that brand can simplify trim-out and maintain a consistent fit and appearance. For routine applications, comparable brackets from Arlington, Ortech, and Kora may all be suitable if the mounting style and plate compatibility are correct.

Related Products

Low voltage brackets are commonly purchased with keystone wall plates, blank plates, brush pass-through plates, coax connectors, RJ45 jacks, speaker binding post plates, cable supports, hook-and-loop ties, and structured cabling accessories. On media wall jobs, they are often paired with recessed TV boxes, cable pass-through kits, and surge protection or power relocation products where permitted and properly listed. For complete rough-in planning, buyers may also need data cable, coaxial cable, speaker wire, faceplates, patch panels, and labelling supplies.

Frequently Asked Questions

Can a low voltage bracket be used for 120V wiring?

No. A low voltage bracket is generally intended for communications, signalling, and similar low voltage cabling. If line-voltage conductors, splices, or devices are involved, use a properly listed electrical box and follow applicable code requirements.

What is the difference between old work and new work low voltage brackets?

Old work brackets are made for finished walls and usually clamp to drywall with tabs or ears. New work brackets attach to framing before drywall is installed, which helps with alignment and rough-in speed on open construction.

When should I choose a 2-gang bracket instead of 1-gang?

Choose 2-gang when you expect multiple jacks, larger connectors, pass-through openings, or future expansion. It is also a common choice behind TVs and at office or boardroom drops where cable density is higher.

Do low voltage brackets work in all wall types?

Most standard models are intended for drywall installations. If the wall is masonry, tile, concrete, or another non-standard assembly, confirm the mounting method and product suitability before ordering.

How much cable slack should be left at a low voltage bracket?

The exact amount depends on the system and termination method, but leaving enough slack for comfortable termination and future rework is standard practice. Avoid leaving the cable so short that the plate must hang by the conductors during service.

Are low voltage brackets better than boxes for data and AV?

Often yes for open-back low voltage terminations, because they provide more room for cable bend radius and connector depth. However, they are only the right choice when an enclosed electrical box is not required by the device, product listing, or installation method.