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Manufacturer Resources
Product Specs
- Country Of Origin:
- Canada (CA)
- 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 G – Frequently Asked Questions
1) How many wiring devices will a Steel City GW 135 G masonry box hold?
The GW 135 G is a one-gang masonry box with 22 cubic inches of volume. That box fill governs how many conductors, devices and clamps you can legally put in it, and 22 cubic inches is on the roomy side for a single-gang box, so a single receptacle or switch fed with 12 AWG and a couple of cable runs is comfortable. It takes one device only.
2) Will the GW 135 G masonry box fit in a standard concrete block wall?
Yes. It measures 3-3/4 inches length by 1-15/16 inches width by 3-1/2 inches depth, which is the gangable masonry box profile meant to drop into the cored cell of standard block and finish flush with the face of the wall. The 1-15/16 inch width is what lets it sit inside a block web without breaking out the face shell.
3) Can I gang two Steel City GW 135 G boxes together for a two-gang opening?
Yes, the GW 135 G is a gangable masonry box, which is what the GNGB in the part description refers to. The side plates come off so boxes can be joined to build a two-gang or larger opening in block. Order one box per gang; they are sold each.
4) How many knockouts does the GW 135 G masonry box have and does that give me enough conduit entries?
There are 22 knockouts on the GW 135 G, spread across the back and ends, so you have plenty of choice for bringing EMT or cable in from whichever direction the block coursing allows. That count is why this box works for through-wall runs where you are feeding in one side and out the other.
5) Is a masonry box like this the right choice, or should I use a standard device box?
Use a masonry box when the box is being set into concrete block, poured concrete or brick as the wall goes up. The GW 135 G is a steel masonry box sized 3-1/2 inches deep to bury in the block cell. A standard drawn or handy box is for stud framing and drywall and will not set properly in masonry. If the block is already up and finished, you would be looking at a surface-mount or old-work solution instead of this.
6) What material and finish is the Steel City GW 135 G, and will it hold up cast in block?
Steel construction with a silver (galvanized-look) finish. That is the standard material for boxes cast into masonry, where the box has to take grout contact and the weight of the block above it without deforming.
7) Is the Steel City GW 135 G sold individually or by the case?
Sold each, so the count you order is the count of boxes you get. For a block wall layout, order one per device opening plus extras for ganged locations.
8) Where is the Steel City GW 135 G masonry box made?
Country of origin is Canada. Useful if your project carries origin documentation requirements on submittals.
How fast can I get the Steel City GW 135 G 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 G come with a warranty?
Absolutely. The Steel City GW 135 G 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 G?
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 G from ZenSupply?
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and
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every order.
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