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WELDED MASONARY BOX W/ 1'KO'S
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Number Of Knockouts:
- 22
- Product Type:
- Masonry box
- Selling Unit Of Measure:
- each
- Standards:
- UL E2969
- Volume:
- 22 in³
- Department:
- Electrical
- Product Group:
- Electrical Enclosures
- Product Subgroup:
- Boxes
- Product Type2:
- Masonry Boxes
- Product Color:
- Silver
- Product Material:
- Steel
Steel City GW 135 NG-1 – Frequently Asked Questions
1) Will the Steel City GW 135 NG-1 masonry box fit a single-gang device in a block wall?
Yes. The GW 135 NG-1 is a single-gang welded masonry box measuring 3-3/4 x 1-15/16 x 3-1/2 inches, so it sets into standard concrete block or poured wall construction for one device. The 3-1/2 inch depth is what governs your layout, so confirm your wall cavity or block cell can take that depth behind the finished face.
2) How much wire fill does the GW 135 NG-1 masonry box give me?
The box is rated at 22 cubic inches. That volume is what you count against your conductor fill calculation, and it is the figure to work from when you are deciding how many conductors, devices and grounds can legally land in the box.
3) How many knockouts does the GW 135 NG-1 welded masonry box have, and what size?
There are 22 knockouts, all 1 inch. That many openings on a single-gang body gives you conduit entry from multiple faces without having to reorient the box in the block cell.
4) Is this a welded box or a gangable one, and does it matter for a masonry install?
It is welded, not gangable. A welded masonry box has no side plates to strip off and no seams to open under the pressure of grout or concrete, which is the reason welded construction is used where the box gets buried in a wall pour. If you need a two-gang or larger opening, you order the multi-gang masonry box rather than ganging this one.
5) What is the GW 135 NG-1 masonry box made of and how is it finished?
Steel body, silver in color, made in the United States. It is a bare steel raceway box, so it is intended for dry concealed masonry work rather than wet or corrosive exterior locations.
How fast can I get the Steel City GW 135 NG-1 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 GW 135 NG-1 come with a warranty?
Absolutely. The Steel City GW 135 NG-1 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 GW 135 NG-1?
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 GW 135 NG-1 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.