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Electrical Box Extension & Brackets Parts Available for Immediate Purchase on Boost Industrials

We appreciate your vested interest in the Electrical Box Extension & Brackets parts we have in stock on Boost Industrials. With unbeatable turnaround times and unmatched price points, customers continuously depend on our products and services when they are in a time crunch or dealing with inflexible budget requirements. On this page, you can easily explore a comprehensive list of in-demand part numbers like 131rac, 14-bl, 203pl, 205rac, 206rac, and many others, all of which have been sourced from leading entities that we trust. Peruse our vast listings and submit a Request for Quote (RFQ) form on any part number of interest to receive a customized solution in 15 minutes or less!  

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Part No.DescriptionManufacturerRFQ
131rac4 in. Octagon Extension Ring, Drawn, 1-1/2 in. Deep, Four 3/4 in. KO'sRaco Manufacturing
14-blBar Hanger, Length 24 Inches, Straight, Steel, For Mounting Ceiling Boxes, Furnished with Stove BoltBowers/thomas & Betts
203pl4 in. Square Plenum Box Extension, 1-1/2 in. Deep, Eight 1/2 in. and Four 3/4 in. KnockoutsRaco Manufacturing
205rac4 in. Square RETRO-RING®, Old Work, Used for Life Safety SupportRaco Manufacturing
206rac4 in. Square RETRO-RING®, Old Work, Used for Mounting of One of Two Device ApplicationsRaco Manufacturing
270racConcrete Ring, Welded, 4 in. Deep, Single Row 1/2 & 3/4 in. KO'sRaco Manufacturing
2gbdex-2gArc-co
2gbex-2gArc-co
3gbdex-3gArc-co
3gbex-3gArc-co
4gbdex-4gArc-co
4gbex-4gArc-co
4cse1-2Features:1 7/8IN Depth, For 4 X 2 1/8 IN Boxes, With Slide On, (8) 1/2 IN Knockout, Standard:UL, Material:Steel, Cubic Capacity:13CIAppleton Electric
4oe-1-2Features:1 1/2IN Depth, For 4 IN Boxes, (4) 1/2 IN Knockout, Standard:UL, Material:Steel, Cubic Capacity:15.5CIAppleton Electric
4oe-splFeatures:1 1/2IN Depth, For 4 IN Boxes, (2) 1/2 IN, (2) 3/4 IN Knockout, Standard:UL, Material:Steel, Cubic Capacity:15.5CIAppleton Electric
4sjde-1-2-3-4Features:2 1/8IN Depth, For 4 11/16 IN Boxes, (4) 1/2 IN, (6) 3/4 IN Knockout, Standard:UL, Material:Steel, Cubic Capacity:42CIAppleton Electric
4ssle-1-2Features:1 1/2IN Depth, For 4 X 2 1/8 IN Boxes, With Slide On, (8) 1/2 IN Knockout, Standard:UL, Material:Steel, Cubic Capacity:10.3CIAppleton Electric
4-od-ext-1-2Octagon Box Extension Ring, 21.5 Cubic Inches, 4 Inch Diameter x 2-1/8 Inch Deep, 1/2 Inch Knockouts, Pre-Galvanized SteelBowers/thomas & Betts
4-od-ext-splOctagon Box Extension Ring, 21.5 Cubic Inches, 4 Inch Diameter x 2-1/8 Inch Deep, 1/2 Inch and 3/4 Inch Knockouts, Pre-Galvanized SteelBowers/thomas & Betts
4-s-wr-1-2Square Wall Extension Ring, 21 Cubic Inches, 4 Inch Square x 1-1/2 Inch Deep, 1/2 Inch Knockouts, Galvanized Steel, Three Knockouts on Each Side, Four 8/32 Screws FurnishedBowers/thomas & Betts
55020Side mount deep box - with rotating dual supportPass And Seymour (legrand)
53151-1-2Square Box Extension Ring, 21 Cubic Inches, 4 Inch Square x 1-1/2 Inch Deep, 1/2 Inch Knockouts, Pre-Galvanized SteelSteel City
53151-1-2-3-4Square Box Extension Ring, 21 Cubic Inches, 4 Inch Square x 1-1/2 Inch Deep, 1/2 Inch and 3/4 Inch Knockouts, Pre-Galvanized SteelSteel City
53151-3-4Square Box Extension Ring, 21 Cubic Inches, 4 Inch Square x 1-1/2 Inch Deep, 3/4 Inch Knockouts, Pre-Galvanized SteelSteel City
53151-svtSteel City
...

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Americas Fastest Growing Private Company
ASA Member
NBAA Member
ISO 9001:2015 & AS9120B
Cage Code 6RE77
ITAR
eCustoms Visual Compliance
D-U-N-S Number 069876325
FAA 0056 B Accredited
ESD S20.20
AS 6081:2012
NIST 800-171 Compliance
Top Distributors 2018
Top Distributors 2020
Top Distributors 2025

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