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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:
- 120 IN
- Product Weight:
- 10.32 LB
- Product Width:
- 2.12 IN
- Department:
- Electrical
- Product Finish:
- Stainless steel type 304
- Product Material:
- Steel
B-LINE 4D21S-120SS4 – Frequently Asked Questions
1) Is the B-Line 4D21S-120SS4 strut channel solid or slotted?
Slotted. The S in 4D21S is the hole pattern designation, so the back of the channel carries B-Line's slotted punching rather than a solid back. That lets you bolt through at any point along the run instead of being tied to fixed hole centers, which is what you want for field-adjusted hanger and trapeze layouts.
2) Will stainless strut hold up in a wet or corrosive area like a pool room or food plant?
This one is built for it. The 4D21S-120SS4 is Type 304 stainless steel, which is the grade typically specified for washdown areas, coastal exposure, and damp mechanical spaces where plain or even galvanized channel rusts at the cut ends. For chloride-heavy service such as pool chemical rooms, a Type 316 channel is the tougher choice.
3) Will standard strut nuts and fittings fit the B-Line 4D21 channel?
Not the common 1-5/8 inch hardware. The 4D21 profile is 2.12 inches wide and only 1.06 inches high, so it is a shallower, wider section than the familiar 1-5/8 by 1-5/8 strut, and spring nuts cut for that profile will not seat correctly. Order fittings and channel nuts made for the 4Dimension 4D21 section.
4) What is the exact part number to order for 10 foot stainless 4Dimension strut?
Eaton B-Line part number 4D21S-120SS4. Reading the code: 4D21 is the channel section, S is the slotted hole pattern, 120 is the 120 inch length, and SS4 is Type 304 stainless.
5) Can I cut this stainless strut channel to length on site?
Yes, the 120 inch stick is meant to be cut to fit. Use a cutoff wheel or blade reserved for stainless so you do not embed carbon steel particles in the surface, which is what causes the rust freckling people blame on the channel. Deburr and, on exposed cuts, cap the end.
How fast can I get the B-LINE 4D21S-120SS4 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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-120SS4 come with a warranty?
Absolutely. The B-LINE 4D21S-120SS4 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-120SS4?
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