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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:
- Yellow zinc chromate
- Product Material:
- Steel
B-LINE 4D21SH-120YZN – Frequently Asked Questions
1) Is yellow zinc chromate strut OK for outdoor or damp locations?
Yellow zinc chromate is a plated finish on steel meant for dry indoor service, mechanical rooms, and covered areas. For exterior runs, wash-down areas, or anywhere it sees standing moisture, specify hot dip galvanized or stainless channel instead. The 4D21SH is steel with a yellow zinc chromate finish.
2) How heavy a load will 18 gauge strut channel take compared to 12 gauge?
The 4D21SH is rolled from 18 gauge steel, which is a light duty channel. It suits small conduit runs, cable tray drops, light fixture supports, and general MRO bracketry. For heavy pipe racks, large trapeze hangers, or seismic bracing, move up to 12 gauge channel in the same profile rather than doubling up 18 gauge.
3) Will standard strut nuts and fittings fit the B-Line 4D21 channel?
The 4D21 profile is a 1-5/8 inch wide family channel at 2.12 inches across the outside with a 1.06 inch height, which is the shallow (half height) version of the standard strut section. Use half height strut nuts, clamps, and fittings sized for a 1-5/8 inch channel opening. Deep 1-5/8 by 1-5/8 fittings will still engage the lips, but braces and end caps cut for the full depth section will not seat on this shallower body.
4) Does the 4D21SH strut channel come slotted or solid on the back?
SH is the slotted hole pattern, so the 4D21SH comes with holes punched in the base rather than a plain solid back. That lets you bolt the channel straight to structure or to a beam clamp through the base without field drilling.
5) What is the exact part number I should order for this Eaton B-Line strut?
Order it as 4D21SH-120YZN. That breaks down as the 4D21 channel profile, SH slotted hole pattern, 120 inch length, and YZN yellow zinc finish. If your drawing calls out a different length or a plain back, the code changes, so match the suffixes rather than just the 4D21 prefix.
How fast can I get the B-LINE 4D21SH-120YZN 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-120YZN come with a warranty?
Absolutely. The B-LINE 4D21SH-120YZN 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-120YZN?
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product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the B-LINE 4D21SH-120YZN from ZenSupply?
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and
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every order.
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