Best 1 Inch Deep Junction Box Options for Modern Wiring Projects
Finding the right 1 inch deep junction or project box can simplify many wiring installations, from new wall openings to retrofit work. The following five products are selected for their compact depth, durable materials, and relevance to standard residential and commercial wiring needs. This guide compares features such as material, knockouts, and weather resistance to help you choose confidently for indoor or outdoor applications.
| Product | Brand | Depth | |
|---|---|---|---|
| RACO 404 | RACO | 1 in | Switch box for NM cable, basic wiring devices |
| TayMac SB3100S | TayMac | 1 in | Weatherproof 1-Gang box for outdoor/interior use |
| LeMotech 5Pcs ABS Project Box | LeMotech | ~1 in | Compact ABS project boxes for small enclosures |
| Cantex 5133465 | Cantex | 1 in hub | Weatherproof PVC box with 1 in hub |
| BELL 5389-0 | BELL | 1 in | 2-Gang Deep Weatherproof Box for outdoor outlets |
RACO 404 3-3/4 x 2-Inch 1-Inch Deep Switch Box
The RACO 404 is a welded switch box with a shallow 1-inch depth, designed for NM cable installations and basic switching or receptacle housing. Its 6.5 cubic inch capacity provides just enough room for standard devices without excessive bulk. This box includes a welded side stud bracket for added mounting stability and a single 1/2-inch end knockout, along with two NMSC cable clamps to secure conductors. This configuration makes it suitable for compact indoor wiring where space is at a premium and weather protection isn’t required. The integrated clamps help ensure code-compliant cable retention and strain relief in tight spaces.
TayMac SB3100S Weatherproof Box, 1-Gang
The TayMac SB3100S combines rugged die-cast metal construction with a durable powder-coated finish to withstand outdoor and harsh indoor environments. Designed as a 1-Gang weatherproof box with three 1-inch outlets, it provides a versatile enclosure for outdoor outlets, switches, and GFCIs. A ground screw and closure plug mounting hardware are included to simplify installation and ensure a tight seal against moisture and dust. This option is ideal for exterior lighting or seasonal outlets where protection from the elements is essential and space is constrained by architectural details.
LeMotech 5-Piece ABS Project Boxes
LeMotech offers a value-oriented package of five ABS project boxes designed for compact electrical enclosures. Measuring 2.4 x 1.4 x 1.0 inches, these boxes are suitable for small electronics projects, low-voltage enclosures, or junctions where space is tightly limited. ABS plastic provides impact resistance and electrical insulation, making them appropriate for dry indoor use. The boxes are lightweight, making them easy to install in walls, ceilings, or other tight cavities. This set is especially beneficial for DIY projects that require multiple small enclosures or rapid prototyping of low-profile junctions.
Cantex 5133465 Weatherproof PVC Box
The Cantex 5133465 is a weatherproof PVC box with a 1-inch hub, designed for outdoor or exposed installations. Made in the United States, its PVC construction resists corrosion and weather-induced wear, while providing a durable enclosure for wiring devices and outlets. This option is suitable for exterior wall installations, outdoor lighting junctions, or any application that requires protection from moisture and dust while maintaining a compact depth. The PVC build keeps weight low and installation straightforward, especially in projects prioritizing ease of maintenance and weather resilience.
2-Gang Weatherproof Deep Box, Five 1-Inch Outlets
Designed for outdoor conduits and exterior wiring, this 2-Gang Weatherproof Deep Box from BELL provides five 1-inch threaded outlets and a robust enclosure suitable for outdoor installations. The rugged construction uses weatherproofing to protect connections and devices from the elements while enabling a flexible layout for multiple outlets or switches. This option is well-suited for outdoor kitchens, decks, or exterior power needs where a deeper, multi-outlet box keeps wiring organized and accessible for maintenance or future expansion.
Steel City 521711 4″ Square Electrical Box
The Steel City 521711 is a 4-inch square box offering 30.3 cubic inches of space with a depth of 2-1/8 inches. While deeper than a strict 1-inch depth, its larger interior makes it a practical option for devices requiring more room, such as multi-gang configurations or devices with thicker backboxes. Constructed from pre-galvanized steel, it provides robust protection for interior and some exterior installations when additional space is required. This box is suitable for remodeling projects where a shallow depth is not strictly necessary but a sturdy metal enclosure is still important.
Hubbell-Raco 662 Handy Box, 1-7/8″ Deep
The Hubbell-Raco 662 is a deeper option at 1-7/8 inches, featuring a 4-inch by 2-inch body with a welded construction and a raised ground. It provides eight 1/2-inch knockouts, making it versatile for a variety of wiring applications where extra space is beneficial without significantly increasing the overall footprint. This box pairs well with mid-sized residential installations, especially where additional internal room is needed for routing conductors or installing multiple devices in a compact wall cavity.
XGGYA Old Work Box for Drywall Installations
The XGGYA old-work box is designed for retrofit installations in existing walls. Its 4-1/3 inch length by 2-1/5 inch width with a 2-3/4 inch depth makes it suitable for adding new sockets or switches to already finished spaces. It includes built-in fixing ears and a rotatable buckle to prevent accidental dislodgement during installation, helping ensure a secure fit in drywall or plaster. The box uses a snap-on connection system to minimize loosening of electrical connections and supports standard AWG conductor sizes for common residential wiring jobs. This option is ideal for remodeling projects where a durable, quick-install in-wall solution is required.
Buying multiple options can help match boxes to specific project needs, whether prioritizing weather resistance, device support, or the ability to fit within tight wall cavities. Consider the depth, material, knockouts, and mounting features when selecting a 1-inch deep junction box for your next wiring task.
Buying Guide: Key Purchase Considerations and Comparisons
- Depth and space: If you must stay at or near 1 inch, prioritize boxes clearly labeled as 1 inch deep and check interior cubic inches to ensure devices or splices will fit without crowding.
- Material: Plastic (ABS/PVC) boxes are lightweight and corrosion-resistant, often best for dry indoor use. Metal boxes offer rugged protection and grounding options, typically better for outdoor or high-traffic environments.
- Weather resistance: Outdoor installations should use weatherproof enclosures with gaskets, seals, and appropriate KO configurations to protect against moisture and dust.
- Knockouts and clamps: Ensure the box provides adequate knockout options and cable clamps to secure conductors and meet code requirements for strain relief.
- Mounting features: Brackets, welded studs, and ground screws affect installation ease and stability, especially in tight or irregular wall cavities.
- Code compatibility: Verify that box ratings (UL/ETL/RoHS as applicable) and package contents align with local electrical codes and the specific device types you plan to install.
- Expansion needs: If you anticipate future additions, consider slightly larger boxes when depth allows, to avoid overfilling a compact space.
- Application context: Indoor dry spaces versus damp or outdoor environments dictate suitable materials and sealing approaches to maximize longevity.
- Cost vs. durability: ABS/PVC options are budget-friendly, while steel and die-cast metal boxes may provide longer service life in challenging environments.