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Manufacturer Resources
Spec Sheet
Product Specs
- Cubic Capacity:
- 42 Cubic Inches
- Knockouts:
- 17
- Mounting Method:
- Wall-/ceiling mounting
- Number Of Outlet:
- 1
- Outer Dimensions Inches:
- 20.6x13x8.7
- Outer Quantity:
- 25
- Standards:
- UL E2969
- Unspsc:
- 39121308 Outlet box
- Weatherproof:
- N
- Weight Uom:
- 124 lbs. per 100
- Department:
- Electrical
- Product Group:
- Boxes & Enclosures
- Product Subgroup:
- Electrical Boxes
- Product Type:
- Outlet Box
- Product Length:
- 119.063mm
- Product Details:
- Outlet Boxes
- Product Color:
- Silver
- Product Shape:
- Square
- Product Material:
- Steel
- Product Width:
- 119.063mm
- Product Depth:
- 53.975mm
Steel City 72171 MS 1/2 3/4 – Frequently Asked Questions
1) Is this box rated for hazardous or classified locations?
No. The 72171 MS is a standard steel knockout-type outlet box for ordinary dry locations. In a Class I or Class II classified area you need an explosionproof conduit outlet box with threaded hubs, such as the Appleton GRJ Series or GRJS Series malleable iron explosionproof boxes, or the Appleton GRT75 malleable iron round conduit outlet box.
2) What should I use instead of the Steel City 72171 MS 1/2 3/4 outlet box on an outdoor wall?
The Steel City 72171 MS 1/2 3/4 is a steel square outlet box that is not weatherproof, so it belongs in dry interior wall or ceiling locations. For an exposed exterior location, the Mulberry Royal Mountie weatherproof outlet box is a die-cast aluminum 1-gang box built for that duty, and the Thomas & Betts 2IH3-1 Red-Dot is a 2-gang conduit outlet box with three 1/2 inch hubs for surface conduit runs outdoors.
3) How does this box mount, to a stud or to a flat surface?
The 72171 MS is a wall and ceiling mount box, fastened through the back to the mounting surface or framing member. It is not a bracketed or nail-on box, so you provide the screws or stud-mount accessory suited to your substrate.
4) Is the Steel City 72171 MS UL listed?
Yes, the box carries UL file listing E2969. That is the reference an inspector or a spec writer will want for a steel outlet box on a commercial job.
5) Is there a nonmetallic alternative to the Steel City 72171 MS 1/2 3/4 outlet box for residential rough-in?
Yes. The Steel City 72171 MS 1/2 3/4 is a steel box. If the job is nonmetallic cable in residential framing, the Cantex EZ Box is a PVC multi-gang residential outlet box. Note the Cantex is multi-gang, while the Steel City 72171 is a single-outlet box.
6) Will the Pass & Seymour P242RRD work in place of the Steel City 72171 MS 1/2 3/4 box?
They serve different purposes. The Pass & Seymour P242RRD is a thermoplastic range and dryer box intended for a single large appliance outlet. The Steel City 72171 MS 1/2 3/4 is a 42 cubic inch steel square box with 17 knockouts for general branch wiring on a wall or ceiling, so it is not a drop-in replacement for an appliance box.
7) I need a round box rather than the square Steel City 72171 MS 1/2 3/4 - what is the option?
The Steel City 72171 MS 1/2 3/4 is square. For a round body, the Appleton GRT75 is a malleable iron round conduit outlet box; it is also an explosionproof-family casting rather than a sheet steel box.
How fast can I get the Steel City 72171 MS 1/2 3/4 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Steel City 72171 MS 1/2 3/4 come with a warranty?
Absolutely. The Steel City 72171 MS 1/2 3/4 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Steel City 72171 MS 1/2 3/4?
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