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Manufacturer Resources
Product Specs
- Application:
- Used to provide a smooth radius for cable exit
- Certifications:
- UL Listed
- Material Details:
- Flat black powder coat A569 steel
- Product Height:
- 4 in
- Product Length Depth:
- 4 in
- Product Weight:
- 1.2 lb
- Product Width:
- 7 in
- Special Features:
- Includes cable tie down holes
- Department:
- Electrical
- Product Group:
- Conduit & Fittings
- Product Subgroup:
- Tees / Crosses
- Product Type:
- Steel runway drop-out
- Product Details:
- Steel runway drop-out
B-LINE SB212909FB – Frequently Asked Questions
1) What does a runway dropout like the B-Line SB212909FB actually do in a cable runway?
It gives cable a smooth radius where it leaves the runway and drops down to a rack, cabinet or equipment frame. Instead of copper or fiber bending over a bare runway stringer or cross member, the dropout carries the bend, and the formed cable tie down holes let you strain relieve the bundle at the exit point so the weight of the drop is not hanging on the terminations.
2) Is this runway dropout UL Listed for a data center or telecom room install?
UL Listed, which is what most facility and IT infrastructure specs call for on runway accessories. That is the rating carried on the part itself; the runway system it mounts to carries its own listing and bonding requirements.
3) How big is the B-Line SB212909FB dropout and how much does it weigh?
It measures 7 inches wide, 4 inches high and 4 inches deep, and weighs 1.2 lb. That footprint matters for planning: the 7 inch width is what sits across the runway edge, so allow that much clear space between adjacent drops or butt-splice hardware when you are laying out multiple exits along one run.
4) What material and finish is the B-Line dropout, and will it match black cable runway?
It is 18 gauge A569 steel with a flat black powder coat, so it matches the standard flat black finish used on B-Line black cable runway and ladder rack. Steel rather than aluminum or plastic, which is why it takes the bearing load of a heavy copper bundle without deforming at the radius.
5) Do I need one dropout per rack or one per cable bundle?
Plan on one per exit point. Each dropout is a single 7 inch wide radius with tie down holes, so every place cable leaves the runway, whether that is over a rack, a wall drop or a cabinet, needs its own. Contractors bidding a row of cabinets typically count one per cabinet position plus spares for future adds.
6) Is a runway dropout the same thing as a waterfall or radius drop, and when would I use something else?
Same idea. A dropout is the piece that turns cable off the edge of the runway and down; a straight-through tee or cross fitting joins runway sections and does nothing for bend radius. If cable is only changing direction within the plane of the runway, you want a junction fitting instead. If cable is leaving the runway vertically, this is the part, because the radius plus the tie down holes handle both the bend and the strain relief.
7) What is the exact part number to order for this B-Line dropout kit?
Order Eaton B-Line part number SB212909FB. The FB suffix is the flat black powder coat finish.
How fast can I get the B-LINE SB212909FB 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 SB212909FB come with a warranty?
Absolutely. The B-LINE SB212909FB 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 SB212909FB?
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