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Manufacturer Resources
Product Specs
- Certifications:
- Not Applicable
- Channel Type:
- 4D21
- Hole Pattern:
- S
- Material Gauge:
- 18 Gauge
- Product Height:
- 1.06 IN
- Product Length Depth:
- 120 IN
- Product Weight:
- 10.32 LB
- Product Width:
- 2.12 IN
- Department:
- Electrical
- Product Finish:
- Hot-dipped galvanized
- Product Material:
- Steel
B-LINE 4D21S-120HDG – Frequently Asked Questions
1) Can this hot-dipped galvanized strut channel be used outdoors?
Yes. The 4D21S-120HDG carries a hot-dipped galvanized finish over steel, which is the coating specified for outdoor and damp locations: rooftops, parking structures, exterior equipment racks and unheated mechanical spaces. Field cuts expose bare steel at the ends, so touch them up with a cold galvanizing compound if the run stays wet.
2) What gauge steel is the B-Line 4D21 strut channel?
18 gauge steel. That is a lighter section than the 12 gauge used for heavy trapeze work, which is what makes this 4D21 suited to conduit support, cable tray hangers, light fixture mounting and equipment brackets rather than heavy mechanical loads. If your drawing calls out 12 gauge strut, this is not the substitute.
3) Is the 4D21 half-height strut or full 1-5/8 inch deep channel?
It is the shallow profile. At 1.06 inches high against a 2.12 inch width, the 4D21 is roughly half the depth of full 1-5/8 by 1-5/8 inch strut. Use it where you need a lighter section for conduit runs, light trapeze and equipment mounting in tight ceiling space; if you are spanning longer between supports or hanging heavier mechanical loads, step up to a full-depth 1-5/8 inch channel instead.
4) Do I need to order nuts, rod and fittings separately with this strut channel?
Yes. The 4D21S-120HDG is the bare 120 inch galvanized channel only. Plan on strut nuts sized to the 2.12 inch channel face, threaded rod or lag fasteners for the slotted back, end caps, and any conduit clamps or brackets the run needs. For an outdoor install, match the hardware to the hot-dipped galvanized channel so you are not pairing plain steel fittings with a galvanized run.
How fast can I get the B-LINE 4D21S-120HDG 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 4D21S-120HDG come with a warranty?
Absolutely. The B-LINE 4D21S-120HDG 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 4D21S-120HDG?
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and
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