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Eaton B-Line series 4Dimension strut channel
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:
- 240 IN
- Product Weight:
- 20.64 LB
- Product Width:
- 2.12 IN
- Department:
- Electrical
- Product Finish:
- Stainless steel type 316
- Product Material:
- Steel
B-LINE 4D21S-240SS6 – Frequently Asked Questions
1) Is this strut channel stainless steel or just coated?
It is Type 316 stainless steel, not a plated or painted carbon channel. 316 is the marine and chemical grade, which is what you want for coastal installs, wastewater plants, food processing washdown areas, pool and natatorium ceilings, and anywhere chlorides will attack galvanized strut.
2) What does the S in 4D21S mean for the hole pattern?
The S suffix is the slotted hole pattern, so the channel comes punched along its back rather than solid. That lets you through-bolt hangers, beam clamps, and anchors anywhere along the run without drilling, which is the reason most electrical and mechanical contractors specify a punched channel over a plain one.
3) Is 18 gauge strut heavy enough for my trapeze hangers?
The 4D21S is 18 gauge, which is a light gauge channel. It suits conduit racks, cable tray supports, small pipe runs, equipment mounting, and general MRO work. For long unsupported trapeze spans carrying heavy pipe you want a heavier gauge or a deeper 1-5/8 inch profile instead, since this one is a 1.06 inch high section.
4) What is the exact part number to order this Eaton B-Line stainless strut?
Order it as 4D21S-240SS6. Read it as the 4D21 profile, S slotted pattern, 240 inch length, SS6 for Type 316 stainless. The SS6 suffix is the detail to check, since a 304 stainless or galvanized version of the same profile is a different part and will not hold up the same way in chloride service.
5) Can I cut this 20 foot stainless strut to length on site?
Yes, 240 inch sticks are meant to be field cut. With 316 stainless, cut it with a stainless-dedicated abrasive blade or bandsaw and de-burr the ends; if you cut it with a wheel that has been used on carbon steel you embed iron particles and get rust freckling on an otherwise corrosion-resistant channel.
How fast can I get the B-LINE 4D21S-240SS6 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-240SS6 come with a warranty?
Absolutely. The B-LINE 4D21S-240SS6 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-240SS6?
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selection,
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Why buy the B-LINE 4D21S-240SS6 from ZenSupply?
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and
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