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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States
- Selling Unit Of Measure:
- each
- Surface Finishing:
- Pre-Galvanized
- Department:
- Electrical
- Product Group:
- Boxes & Enclosures
- Product Subgroup:
- Box Covers
- Product Type2:
- Outlet Box Covers
- Product Size:
- 4 Inches
- Product Color:
- Silver
- Product Shape:
- Square
- Product Material:
- Steel
- Product Type:
- Raised Device Cover
Steel City 478 – Frequently Asked Questions
1) Will the Steel City 478 device cover fit a standard 4 inch square outlet box?
Yes. The 478 is a 4 inch square device cover, so it mounts to standard 4 inch square boxes using the box's two diagonal cover screw holes.
2) What does the 1/8 inch raise on the Steel City 478 cover actually do for me?
The 1/8 inch raise gives you a little extra volume and depth above the box so a switch or receptacle sits slightly forward of the box face. On surface mounted conduit work that small raise is usually what lets the device and its screws clear the box edge without binding the wiring behind it.
3) Is the Steel City 478 cover suitable for a damp or unfinished area like a parking garage or mechanical room?
It is a pre-galvanized steel industrial device cover, so the zinc coating handles the dry to lightly humid conditions of mechanical rooms, warehouses, and garages on surface mounted conduit. It is not a gasketed weatherproof cover, so for exposed wet locations use a listed weatherproof cover and gasket instead.
4) What part number do I order for a 4 inch square 1/8 inch raised single device cover from Steel City?
Order Steel City 478. That is the full manufacturer part number for the 4 inch square industrial device cover with the 1/8 inch raise in pre-galvanized steel.
5) Does the Steel City 478 come in a pack or is it sold one at a time?
The 478 is sold each, so order one per box you are covering. On a multi-opening job count your boxes and order to match.
How fast can I get the Steel City 478 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
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 478 come with a warranty?
Absolutely. The Steel City 478 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 478?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Steel City 478 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.