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Manufacturer Resources
Product Specs
- Certifications:
- CSA C22.2.
- Closure Type:
- Plated screws
- Finish Color:
- Gray
- Material Thickness:
- 16 gauge
- Product Height:
- 4 IN
- Product Length Depth:
- 72 IN
- Product Weight:
- 21.432 LB
- Product Width:
- 4 IN
- Special Features:
- Cover is held secure by flange and plated screws
- Department:
- Electrical
- Product Type:
- GRTGV NK wiring trough
- Product Details:
- GRTGV NK wiring trough
- Installation Category:
- Embossed thru holes
B-LINE 4472 GRTGV NK – Frequently Asked Questions
1) Does the 4472 GRTGV NK trough come with a removable cover, and how does it attach?
Yes, the cover is part of the trough and comes off for lay-in wiring. It's held by a flange plus plated screws, so you loosen the screws, lift the cover, drop your conductors in, and refasten. No latches or hinges to fail, and the plated screw hardware is included rather than something you supply.
2) What does the NK in 4472 GRTGV NK mean for knockouts?
NK is the no-knockout version, meaning the trough body ships blank. You punch or drill your own conduit openings wherever the run actually lands, which is what most installers want on a custom layout. If you need factory knockouts on a set pattern, you need a different suffix in the GRTGV family, not this one.
3) Is the B-Line 4472 GRTGV NK trough approved for Canadian installations?
It carries CSA C22.2 certification, which is the Canadian standard an inspector looks for on wireway. That matters if you're a contractor or institutional buyer working to CSA rather than to a US-only listing.
4) Is this trough suitable for outdoor or wet locations?
No. The 4472 GRTGV NK is a screw-cover trough whose cover is held by a flange and plated screws, which is an indoor dry-location construction, not a gasketed raintight design. For an exterior wall or a washdown area, specify a raintight wireway instead of this one.
5) How is this wiring trough mounted to a wall or strut?
Mounting is through embossed thru holes in the trough body, so you fasten it directly to the wall, backboard, or strut with your own bolts or lag screws. The embossing keeps the fastener seated against the sheet metal. Anchors and bolts are not part of the trough, so pick them for the substrate you're landing on.
6) Is 16 gauge heavy enough for a 6 foot wiring trough run?
The body is 16 gauge steel, which is the usual weight for lay-in wireway of this size and holds its shape across the 72 inch span when it's supported at the ends. On long horizontal runs, keep the fastening at the embossed thru holes tight and add intermediate support so the cover flange stays aligned and the screws seat cleanly.
7) Can I use this 4x4 trough to feed several panels instead of running separate conduits?
That's exactly what a 4 x 4 lay-in trough is for. You run conductors once through the 72 inch gutter, pull the cover, and tap off at each panel through openings you punch yourself, since this is the NK no-knockout version. It saves individual conduit runs between adjacent enclosures and makes future adds a cover-off job instead of a repull.
8) Will the gray finish on this trough match other B-Line wireway in my panel room?
The finish is gray, the standard color B-Line uses across its wiring trough line, so it reads consistently next to other gray gutter and enclosure work on the same wall. For a facility standardizing on one look, ordering the same GRTGV gray family across all runs keeps the appearance uniform.
How fast can I get the B-LINE 4472 GRTGV NK 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 B-LINE 4472 GRTGV NK come with a warranty?
Absolutely. The B-LINE 4472 GRTGV NK 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 B-LINE 4472 GRTGV NK?
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