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Eaton B-Line series 4Dimension strut channel
Manufacturer Resources
Product Specs
- Certifications:
- Not Applicable
- Channel Type:
- 4D21
- Hole Pattern:
- SH
- 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 4D21SH-120HDG – Frequently Asked Questions
1) Can I use B-Line 4D21SH strut channel outdoors or in a wet area?
Hot-dipped galvanized steel is the finish on the 4D21SH, which is the coating normally specified for exterior runs, parking structures, rooftops, and damp mechanical spaces. It is the heavier-coverage option compared with pre-galvanized (electro-galvanized) strut, which is generally kept to dry interior use.
2) Will standard strut nuts and fittings fit the B-Line 4D21 channel?
Yes. The 4D21 is a 1-5/8 in nominal width channel (2.12 in over the formed edges), so channel nuts, clamps, brackets, and pipe straps made for 1-5/8 in strut engage the returned lips normally. The shallow 1.06 in depth only limits fittings that need a deep channel cavity, such as some back-to-back or deep-throat inserts.
3) What does the SH in 4D21SH mean for the hole pattern?
SH is the slotted hole pattern in the back of the channel, versus a plain solid-back stick with no holes. The slots let you bolt the channel to structure or join sections anywhere along the run without field drilling, which is what most contractors want for trapeze hangers and wall-mounted racks.
4) What part number should I quote for the 10 foot hot-dip galvanized B-Line half-height slotted strut?
Order it as Eaton B-Line 4D21SH-120HDG. The number reads out as 4D21 profile, SH slotted back, 120 in length, HDG hot-dipped galvanized finish.
5) How much does a stick of this strut weigh for shipping and handling on site?
Each 120 in length runs 10.32 lb, light enough for one person to carry and set, which matters when you are hanging long runs off a lift or working overhead alone.
How fast can I get the B-LINE 4D21SH-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 4D21SH-120HDG come with a warranty?
Absolutely. The B-LINE 4D21SH-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 4D21SH-120HDG?
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 B-LINE 4D21SH-120HDG 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.