Best Electrical Box Options for Block Walls and Old-Work Remodels
Answering the question, these electrical boxes are designed to fit block walls or retrofit into existing drywall with minimal demolition. Each option suits different remodeling needs, from single-gang outlets to two-gang configurations and childproofing. The top picks below are chosen for durability, ease of installation, and compliance with common wall materials. Ideal buyers include DIY homeowners upgrading outlets, contractors completing remodels, and safety-conscious buyers seeking reliable wiring enclosures.
Summary table of selected products:
| Product | Best For | Key Benefit | Notes |
|---|---|---|---|
| XGGYA Old Work Box (1 Gang, 4-1/3″ x 2-1/5″ x 2-3/4″) | Old-work installations in walls | Rotatable buckle and built-in fixing ears | Lightweight, easy to install |
| Newhouse Hardware 1-Gang PVC Old Work Box | Remodels and renovations | Versatile as junction, switch, GFCI, or duplex box | PVC construction, good for non-metallic sheathing |
| SmarToggle Single Gang Retrofit Box | Stud or no-stud walls | Snap-in 1-1/2″ toggles for secure fit | Smart-device ready with multiple ports |
| MAKERELE 2-Gang Old Work Box | Two-gang needs with fire protection | 26 cu.in. capacity, 2-hour fire rating | ETL listed for safety |
| Southwire 1-Gang MSB22+ Box | Ceiling fans or lighting fixtures | Depth-adjustment and built-in clamps | Heavy-duty for lighting loads |
XGGYA Old Work Box, Plastic 1-Gang
The XGGYA Old Work Box is a 1-gang plastic junction suitable for retrofitting into existing walls. It uses built-in fixing ears and a rotatable buckle to secure the box without excessive wall damage. Best for light to moderate residential wiring projects where quick installation matters. Limitations include its smaller capacity compared with 2-gang configurations, so plan for future expansions if needed.
Who it’s best for: homeowners upgrading a single outlet or switch in a remodel, and for DIYers who want a straightforward install with minimal wall damage. Why selected: easy installation, compact footprint, and ETL-style compliance signals suitability for typical residential drywall and block-wall setups.
Notes: ensure the wall cavity has at least the stated dimensions (4-1/3″ L x 2-1/5″ W x 2-3/4″ D). The box uses AWG compatibility guidance for wiring sizes, aiding stable connections without re-work.
GiGreen USB Plug Wall Charger 3 Pack
This USB wall charger trio provides a practical option when upgrading outlets in a busy wall where devices frequently charge. It supports 100-240V input and 5V/2.1A output, with smart IC protection to guard against over-current and over-heating. Best for households with multiple charging devices or where multiple outlets are needed in close proximity. Better for: spaces requiring convenient, fast USB charging without adding bulky adapters.
Who it’s best for: renters or owners needing extra USB charging power without changing the electrical box structure, and for media centers where many devices require charging. Why selected: compact design, broad device compatibility, and safety features that prevent overcharging.
Notes: this option is an ancillary accessory rather than a full electrical box; consider it as a complementary upgrade in areas where electrical boxes still accommodate standard outlets.
Newhouse Hardware 1-Gang PVC Old Work Box
The Newhouse Hardware 1-Gang PVC Old Work Box is designed for remodeling projects. Its plastic construction supports non-metallic sheathed cables and offers versatility for electrical work like switches, GFCI outlets, or duplex receptacles. Best for remodels where quick, non-conductive boxes are preferred. Limitation: PVC boxes may be less heat-tolerant in high-load areas, so plan for appropriate usage and space.
Who it’s best for: DIY remodelers and professionals seeking a versatile box that can serve multiple purposes in a single-gang configuration. Why selected: PVC construction provides corrosion resistance, and the box is adaptable to several electrical needs in a remodel scenario.
Notes: confirm fit with the chosen receptacle type and ensure wall depth accommodates the box and any wall finish materials.
SmarToggle Single Gang Retrofit Box
The SmarToggle Retrofit Box offers a stud or no-stud mounting option, making it highly adaptable for different wall structures. It includes 1-1/2″ snap toggles for a secure fit and has four wiring ports to manage multiple conductors. Best for smart-device installations or retrofits where stud access is variable. Limitation: larger footprint than a standard single-gang box, which can affect fit in tight spaces.
Who it’s best for: renovators installing smart switches or outlets in walls with uncertain stud locations. Why selected: dual-mount capability and secure toggles ensure a flush, reliable installation in diverse wall conditions.
MAKERELE 2-Gang Old Work Box
The MAKERELE 2-Gang Old Work Box provides a larger capacity (26 cu in) and a 2-hour fire rating for added safety. It features built-in wire clamps and fixing components for straightforward installation into remodels. Best for two-gang configurations requiring robust space and extra fire protection. Caution: ensure the wall cavity depth accommodates the box with wiring and any insulation.
Who it’s best for: homeowners or contractors performing multi-gang upgrades where higher capacity and fire protection are priorities. Why selected: ETL-listed compliance and explicit fire-rating improve safety for electrical installations in block walls or retrofit spaces.
Southwire MSB22+ 1-Gang Box
The Southwire MSB22+ is a 1-gang box designed for lighting fixtures and switches in drywall or block walls. It features a step-down entry for wire insertion from both ends and built-in wire clamps for easier assembly. Best for dedicated light fixture or ceiling fan wiring where stable mounting is essential. Limitation: depth and port arrangement may limit larger conductor bundles in some installations.
Who it’s best for: electricians and serious remodelers wiring basic single-gang circuits, especially where depth-adjustment and clamps reduce installation complexity. Why selected: robust construction, guided entry features, and compatibility with common lighting and switch configurations.
Buying Guide: Key Considerations For Selecting An Electrical Box For Block Walls
- Project type: Choose single-gang or two-gang boxes based on outlet or switch quantity and future expansion plans.
- Wall structure: Block walls, stud walls, and remodels dictate whether old-work, retrofit, or standard boxes are best.
- Material: PVC/plastic boxes resist corrosion and are easy to install in non-metallic sheathing; metal boxes offer strength in certain regions.
- Fire rating and safety: For homes with high-risk areas or tight fire codes, select boxes with explicit fire resistance ratings and ETL/UL listings where possible.
- Wiring capacity: Ensure the box capacity (cu in) accommodates conductors, devices, clamps, and connectors without crowding.
- Compatibility: Verify compatibility with devices (GFCI, smart switches, USB outlets) and whether the box can support multi-port configurations.
- Depth and clearance: Check wall depth, insulation presence, and overall clearance to ensure the installed box remains flush with wall surfaces.
- Installation ease: Look for built-in mounting ears, rotatable buckles, snap toggles, and pre-installed clamps to reduce labor time.
FAQ
- What is an old-work box?
An old-work box is designed to retrofit into existing walls with minimal demolition. It clamps or anchors to secure the box once mounted. - When should I choose a 2-gang box over a 1-gang box?
Choose a 2-gang box when you need to install two outlets or switches in the same location, or when planning for future additions. - Are PVC old-work boxes safe for high-heat areas?
PVC boxes are suitable for typical residential loads but may have limits in high-heat or outdoor exposure; follow manufacturer guidance for specific environments. - What is the purpose of built-in wire clamps?
Built-in clamps secure conductors, reducing movement and improving the reliability of connections during installation. - Do these boxes need to meet ETL or UL standards?
For safety and code compliance, select boxes that are ETL or UL listed, especially in finished walls or shared spaces. - Can I install these boxes in block walls?
Some models are suitable for block walls with proper anchoring and mounting hardware; verify the product’s installation notes for block-wall suitability.