B-Line Eaton series imperial c...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$547.80
B-Line Eaton series imperial cable tray and ladder, 4" Height, 21.91" Length, 36" Width, 36" and 12" Tray widths, Series 2-5 right reducer, Aluminum,

B-Line Eaton series imperial cable tray and ladder, 4" Height, 21.91" Length, 36" Width, 36" and 12" Tray widths, Series 2-5 right reducer, Aluminum,

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Model: 4A-36-RR12
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$547.80
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Eaton B-Line series imperial cable tray and ladder, 4" Height, 21.91" Length, 36" Width, 36" and 12" Tray widths, Series 2-5 right reducer, Aluminum, 12" Radius

Manufacturer Resources

Product Specs

Certifications:
CE
Product Height:
4 in
Product Length Depth:
21.91 in
Product Weight:
4.6 lb
Product Width:
36 in
Radius:
12 in
Special Features:
36" & 12" Tray widths
Department:
Electrical
Product Type:
Series 2-5 right reducer
Product Details:
Series 2-5 right reducer
Product Material:
Aluminum

B-LINE 4A-36-RR12 – Frequently Asked Questions

1) What does the B-Line 4A-36-RR12 cable tray reducer actually do?
The Eaton B-Line 4A-36-RR12 is a right reducer fitting that transitions a run of cable tray from 36 inch width down to 12 inch width. The reduction happens on one side (the right), so the opposite siderail stays in a straight line through the transition. It is a Series 2-5 fitting with a 4 inch rail height and 21.91 inches of length through the fitting.
2) Will a right reducer work if my tray run has to step down on the left side?
No. The 4A-36-RR12 reduces on the right only, so the offset lands on one specific side of the run. If your narrower tray needs to line up on the opposite side, you need the left-hand version of the same 36 inch to 12 inch reducer, not this one. Determine handing by looking along the direction of the run before ordering.
3) What rail height and radius do I need to match to use this B-Line reducer?
Both trays joining at this fitting need to be 4 inch rail height, since the reducer is built at 4 inches. The fitting is made to a 12 inch radius, which is the standard bend radius family it belongs to, so the rest of the fittings in the run (elbows, tees) should be the same 12 inch radius to keep cable bend radius consistent through the system.
4) How much space do I need to allow in the run for the 36 inch to 12 inch reducer?
Allow 21.91 inches of straight run length for the fitting itself. That is the dimension between the two connection points, so lay out your straight sections and hanger spacing around it. The wide end is 36 inches across.
5) What part number do I order for a B-Line 36 inch to 12 inch right reducer in 4 inch aluminum?
Order Eaton B-Line model 4A-36-RR12. The number reads out as 4 inch height, aluminum, 36 inch nominal width, right reducer, 12 inch radius, which is why it lands on the 12 inch narrow end.
6) Does the B-Line 4A-36-RR12 reducer carry any certification marking?
It carries a CE marking. That is the only certification held on record for this aluminum reducer.
How fast can I get the B-LINE 4A-36-RR12 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 4A-36-RR12 come with a warranty?
Absolutely. The B-LINE 4A-36-RR12 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 4A-36-RR12?
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 4A-36-RR12 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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