Eaton B-Line series wiring trough, 12" height, 36" length, 12" width, GTGV NK wiring trough, Thru holes, No knockouts, Screw cover, NEMA 1, Galvanized steel, Plated screws, Gray, 14 gauge
Manufacturer Resources
Product Specs
- Certifications:
- CSA C22.2.
- Closure Type:
- Plated screws
- Finish Color:
- Gray
- Material Thickness:
- 14 gauge
- Mounting Method:
- Thru holes
- Product Height:
- 12 in
- Product Length Depth:
- 36 in
- Product Weight:
- 37.554 lb
- Product Width:
- 12 in
- Special Features:
- Cover is held secure by plated screws
- Department:
- Electrical
- Product Type:
- GTGV NK wiring trough
- Product Details:
- GTGV NK wiring trough
B-LINE 121236 GTGV NK – Frequently Asked Questions
1) Is this B-Line wiring trough rated for outdoor or wet locations?
No. The 121236 GTGV NK is a NEMA 1 enclosure, which is indoor, dry location only, for protection against incidental contact and falling dirt. It is not sealed against rain, washdown, or dust. For an outdoor feeder junction you need a NEMA 3R raintight trough instead.
2) Does this trough come with knockouts, or do I have to drill my own conduit entries?
NK means no knockouts. The 121236 GTGV NK ships blank, so every conduit entry gets field-punched with a knockout punch or hole saw wherever your raceway lands. That's the version electricians usually want when conduit entry points don't line up with factory patterns. If you'd rather have pre-punched openings, order the knockout version of the trough instead.
3) How does the cover come off on the B-Line GTGV NK trough, and how is it mounted?
The cover is a screw cover, held on with plated screws, so it's fully removable for pulling and landing conductors rather than hinged. Mounting is through holes in the back of the body, meaning you fasten it directly to a wall, strut, or backboard with your own hardware. Fasteners for mounting are not part of the trough.
4) What material and gauge is this wiring trough, and will it hold up in a damp shop or garage?
14 gauge galvanized steel with a gray finish. The galvanizing gives better corrosion resistance than plain painted steel for humid indoor spaces like shops, garages, and mechanical rooms, and 14 gauge is heavy enough to stay square when you're pulling large feeders through it. It's still a NEMA 1 box, though, so keep it out of any location exposed to dripping water or weather.
5) Is this B-Line trough acceptable for a job in Canada?
It carries CSA C22.2 certification, so it meets the Canadian standard for this type of enclosure and will be accepted on Canadian jobs where a NEMA 1 indoor wireway is specified.
6) What's the exact part number to order this 12x12x36 B-Line trough?
The manufacturer part number is 121236 GTGV NK from Eaton's B-Line series. Read it as size first (12 inch height, 12 inch width, 36 inch length), then GTGV for the galvanized screw-cover trough, then NK for no knockouts.
7) Can I join two of these troughs together to make a longer run?
Yes, 36 inch sections are meant to be ganged. Because the 121236 GTGV NK ships with no knockouts, you field-punch matching openings in the abutting ends and join them with trough connectors and closure plates, which are ordered separately. Keep your conductor fill within code limits for the 12 x 12 cross section when you carry a pull through multiple sections.
How fast can I get the B-LINE 121236 GTGV NK 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 B-LINE 121236 GTGV NK come with a warranty?
Absolutely. The B-LINE 121236 GTGV NK is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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