B-Line B280FLSS4 Eaton series ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$715.61
B-Line B280FLSS4 Eaton series strut fittings and accessories, 3.5" Height, 8" Length, 3" Width, 3.12lbs, Steel, Rectangular post base, flush to side, Fits channel B22, Stainless steel type 304

B-Line B280FLSS4 Eaton series strut fittings and accessories, 3.5" Height, 8" Length, 3" Width, 3.12lbs, Steel, Rectangular post base, flush to side, Fits channel B22, Stainless steel type 304

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Model: B280FLSS4
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$715.61
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Eaton B-Line series strut fittings and accessories, 3.5" Height, 8" Length, 3" Width, 3.12lbs, Steel, Rectangular post base, flush to side, Fits channel B22, Stainless steel type 304

Manufacturer Resources

Product Specs

Certifications:
Not Applicable
For Channel Type:
Fits channel B22
Product Height:
3.5 in
Product Length Depth:
8 in
Product Weight:
3.12 lb
Product Width:
3 in
Department:
Electrical
Product Type:
Rectangular post base, flush to side
Product Finish:
Stainless steel type 304
Product Details:
Rectangular post base, flush to side
Product Material:
Steel

B-LINE B280FLSS4 – Frequently Asked Questions

1) What channel does the B-Line B280FLSS4 post base fit?
The B280FLSS4 post base is made for B22 channel, which is the 1-5/8 inch wide, 3-1/4 inch deep back-to-back strut in the B-Line series. If you are standing up 1-5/8 x 1-5/8 single channel instead, this base will not match the profile, you need a base sized for that channel.
2) Is the B280FLSS4 strut post base stainless or plain steel?
It is type 304 stainless steel, with steel listed as the base material. 304 is the usual choice for damp, washdown, or exterior mounting where a plain or pre-galvanized base would bleed rust at the anchor holes.
3) What does flush to side mean on a rectangular strut post base?
Flush to side means the channel sits at one edge of the rectangular plate rather than centered on it, so the face of the strut lines up with the edge of the base. That lets you set the post tight against a wall, curb, or equipment pad with no offset, and it puts all the anchor holes out on the open side of the plate where a drill fits.
4) How much footprint does the B280FLSS4 base take up on a pad?
The base measures 8 x 3.5 x 3 inches across its height, length and width figures, so it is a long rectangle rather than a square plate. Lay out your anchors and edge distance with that 8 inch dimension in mind if you are setting it near the lip of a concrete pad.
5) Are anchors or bolts included with the B-Line B280FLSS4 post base?
No. The B280FLSS4 ships as the post base fitting only. You supply the concrete or deck anchors for the plate and the channel nuts and bolts that tie the strut into the base. On a 304 stainless base, pair it with stainless fasteners so you are not setting up a galvanic problem at the connection.
6) What is the exact part number to order this Eaton B-Line stainless post base?
Order it as B-Line B280FLSS4. The SS4 suffix is the type 304 stainless version of the B280 flush-to-side rectangular post base, so it is the number to quote if a plain or electro-galvanized B280 was substituted on a previous order.
7) Can I use the B280FLSS4 to stand up a strut rack for conduit and equipment supports?
That is what it is for. The base anchors B22 channel upright to a floor, pad, or structural deck so you can build freestanding strut racks for conduit runs, panels, or mechanical equipment. Weight of the fitting itself is 3.12 lb.
How fast can I get the B-LINE B280FLSS4 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 B280FLSS4 come with a warranty?
Absolutely. The B-LINE B280FLSS4 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 B280FLSS4?
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 B280FLSS4 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.
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