34,000+ results for extension box
- ABB Teach Pendant Extension Cable 679100001R *New No Box*Opens in a new window or tabNew – Open box$149.95Top Rated Pluscncsalvage11 (4,445) 100%+$17.07 shippingFree returns
- RACO 665 Extension Ring,Box 6XC58Opens in a new window or tabBrand New$6.15grainger (98,851) 98.9%+$5.99 shippingFree returns
- Waterproof Electrical Connection Box Outdoor Weatherproof Extension Cord BoxOpens in a new window or tabBrand New$24.99Save up to 15% when you buy morefcxkj001 (3,364) 99.2%Free shipping
- Eaton 4" OCTAGON EXTENSION RING BOX OF 50Opens in a new window or tabCat No. TP286New – Open box$200.00remad-3949 (45) 100%Free shipping
- 4-11/16" Square Welded Electrical Extension Box Ring 2-1/8 Deep KO's~Raco 262Opens in a new window or tabBrand New$4.99electrician.depot (36,591) 98.2%+$5.99 shipping917 sold
- ReceptXtenders Electrical Receptacle Box Extension Ring 1-Gang 1/4"Opens in a new window or tabNew – Open box$1.58Save up to 40% when you buy moreWas: $3.95 60% offTop Rated Plusfsasllc (188,318) 99.3%+$4.95 shippingFree returns3 watchers
- RANDL INDUSTRIES 5" X 4" SQUARE 5/8" EXTENSION RING BACK BOXOpens in a new window or tabBrand New$4.50Save up to 7% when you buy moretoomanyamps (29,503) 99.5%Free shipping
- 25 pieces 4" Octagon Box Extension Rings Steel City NEWOpens in a new window or tabBrand New$52.00pratt2905 (1,791) 100%Free shippingAlmost gone11 sold
- Weatherproof 2-Gang Metal Extension Box Ring 8 Eight 1/2" Holes GRAY OutdoorOpens in a new window or tabBrand New$12.99electrician.depot (36,591) 98.2%+$5.95 shipping219 sold
- Raco 130 Extension Ring, Box, 2, Steel, Extension RingOpens in a new window or tabFree Shipping on orders over $75Brand New$3.15zorotools (1,183,446) 99.5%+$5.00 shippingFree returns
- 3 Port Cigarette Lighter Adapter Outlet Extension Box 12V DC 15AOpens in a new window or tabBrand New$7.50truemods (38,428) 99.8%Free shipping2,777 sold
- Outdoor Weatherproof Extension Cord Box 4 Cable Seal Entry for Timer Outlet PlugOpens in a new window or tabBrand New$24.99Save up to 15% when you buy morefcxkj001 (3,364) 99.2%Free shipping
- Orbit 3RB-50-EXT 3 Inch Octagon Steel Extension Box 1.5 Inch Deep 0.5 InchOpens in a new window or tabBrand New$4.73Save up to 10% when you buy morelorrayne49 (9,242) 97.3%+$8.95 shipping
- 30 Amp NEMA 14-30P/14-30R 25FT Generator Extension Cord & Power Inlet Box 4ProngOpens in a new window or tabBrand New$54.83Save up to 8% when you buy moreskyup2018 (9,173) 99%Free shippingFree returns
- Iberville BC1110R Utility Box Extension Ring 4in X 2-3/8in X 1-7/8in (BOX OF 50)Opens in a new window or tabBrand New$210.00intersupplier (1,148) 99.4%+$22.26 shipping
- 1.5x4 Inch Electrical Extension box 27PackOpens in a new window or tabBrand New$92.45palouse_trading_company (445) 100%Free shippingBenefits charity
- 4 In. 21 Cu. In. Square Box Extension RingOpens in a new window or tabBrand New$5.59marcelixstoreusa (18,843) 99.3%Free shippingFree returns
- Orbit 5SDB-MKO-EXT 5 Inch Square Extension Box 2.13 Inch Deep MKOOpens in a new window or tabBrand New$9.50Save up to 10% when you buy morelorrayne49 (9,242) 97.3%+$5.00 shipping
- 4" x 1-1/2" Deep Square Box Extension Ring w/ 1/2" KnockoutsOpens in a new window or tabNew – Open box$2.99Save up to 25% when you buy morediversifiedsystems (27) 96.6%+$8.45 shipping
- Steel City 59361-1/2 Handy/Utility Outlet Box Extension RingOpens in a new window or tabBrand New$8.30allsuppliesonline (2,190) 98.4%Free shippingLast one
- 8-PK 59351-1/2 UTILITY Electrical HANDY BOX EXTENSION RING NEW 4SSLE-1/2Opens in a new window or tabBrand New$19.95Save up to 5% when you buy moreTop Rated PlusFree 2-3 day shippingalimproviste (25,579) 99.9%Free returns
- 3 Pack Weatherproof Electrical Connection Box ,Extension Cord Safety Cover BlackOpens in a new window or tabBrand New$16.99Top Rated Pluscostechus (25,714) 99.3%Free shippingFree returns
- 3 Pack Weatherproof Electrical Connection Box ,Extension Cord Safety Cover GreenOpens in a new window or tabBrand New$16.99Top Rated Pluscostechus (25,714) 99.3%Free shippingFree returns
- Wiremold V5737A Extension Box Open Base, Ivory, 5-1/2"L (Pack of 5)Opens in a new window or tabBrand New$25.00jusrutl50 (24) 100%+$13.65 shipping
- 531511/23/4 STEEL-CITY 4-INCH PRE-GALVANIZED STEEL SQUARE BOX EXTENSION RING 1-1Opens in a new window or tabBrand New$2.99Save up to 10% when you buy moreTop Rated Plus+$10.59 shippingfittingsproelectricstore (2,694) 100%Free returnsLast one
- TP428 Crouse-Hinds Cooper 4" Square Box Extension 1 1/2" Deep 1/2" 3/4" KnockoutOpens in a new window or tabNew – Open box$3.52Top Rated Plusexcessexpressllc (12,506) 99.8%+$4.65 shippingFree returns
- Bell 5406-0 Single-Gang Extension Box GrayOpens in a new window or tabNew – Open box$9.52Top Rated PlusWas: $11.90 20% offcordobaretail (2,266) 99.4%Free shippingFree returns
- Legrand Wirelmold V5739A Extension Box Open Base 6 3/8" (162mm)Opens in a new window or tabBrand New$22.50ripplestix (1,352) 99.4%Free shipping
- Wiremold 5737 Buff Extension Box Open Base NOS - New & SealedOpens in a new window or tabBrand New$13.00Top Rated Plussundown_6 (884) 100%Free 2-3 day shippingFree returns
- 1-Gang 3/4 In. Electrical Receptacle Box Extension Ring 5-PackOpens in a new window or tabBrand New$13.10storefrontmiami (2,752) 96.1%Free shipping
- Siemens WSP3 Bussed Extension Box 1200A Max 240V 3PH NEMA 3R Indoor Outdoor NOSOpens in a new window or tabNew – Open box$600.00Save up to 10% when you buy moretimsoksales (16,080) 99.6%Free shipping
- Beckhoff IE2403 I/O Extension Box 24VDC 8-Channel Input 8-Channel Output SEALEDOpens in a new window or tabBrand New$139.99Top Rated Pluskasiaz2006 (12,018) 99.8%Free shippingFree returns
- Switch Box Extension 3"x2"x7/8" with screwsOpens in a new window or tabBrand New$11.00ksnsurplus (42) 100%+$8.50 shipping
- 1-Gang 3/4 in. Electrical Receptacle Box Extension Ring 5-PackOpens in a new window or tabBrand New$10.63flashdealshop (3,342) 99%Free shipping14 sold
- Thomas&Betts Galvanized Steel 3" x 2" x 7/8" Switch Box Extension, Lot of 2, FSOpens in a new window or tabBrand New$10.00Save up to 20% when you buy morebuildersdiscountmart (102,081) 99.4%Free shipping
- 53151-1/2 Steel City 4" Square Box Extension 1-1/2" Deep 12x 1/2" Knockouts NOSOpens in a new window or tabNew – Open box$7.49gallowayindustrialsupplyco (2,033) 99.5%Free shipping
- 71695K42 Steel Extension Ring, 4" Square, 1-1/2" Deep, for Steel Outlet BoxOpens in a new window or tabNew – Open box$2.95componentcentralinc (13,415) 98.8%+$9.00 shipping
- Lot of 20 - STEEL-CITY 53151-1/2”/3/4”, 4" X 1-1/2” Square Extension Box, NOSOpens in a new window or tabBrand New$59.99970d (1,570) 99.9%+$12.99 shipping
- Legrand Single Gang Extension Box White 41846-BW5-RC-120913Opens in a new window or tabNew – Open box$12.11Save up to 40% when you buy morewsybllc (35,193) 99.2%+$4.95 shippingFree returns
- Connection Box Electrical Box Extension Cord Junction Box Cover WaterproofOpens in a new window or tabBrand New$67.19Buy 1, get 1 20% off with couponhzdzing (69) 98.6%Free shipping
- Mono Systmes Snapmark Deep Extension Box/ Steel - #SM5751AOpens in a new window or tabBrand New$13.90manegm.2012 (526) 99.5%Free shipping
- Bowers 4-S-WR-1/2 Square Thru-Box Wall Extension Rings 4" Square, 1-1/2" DeepOpens in a new window or tabNew – Open box$9.99idoovad (26,636) 99.9%Free shipping
- Steel City 73151 Extension BoxOpens in a new window or tabNew – Open box$4.75centralsurplus (17,108) 99.6%+$8.91 shipping
- Steel City 53171-1 4" Square Extension Ring 1" KOOpens in a new window or tabNew – Open box$3.00Save up to 20% when you buy morejjpstuff (2,484) 99.5%+$6.65 shipping87 sold
- Steel City 53151 1/2 3/4 Pre-Galvanized Steel Square Box ExtensionOpens in a new window or tabBrand New$14.55mondaychu (2,850) 99.3%Free shippingFree returnsLast one
- Raco Steel Gray Octagon Shape 11.8 cu. in. Capacity Extension Ring 3.5 Dia. x 3-Opens in a new window or tabBrand New$11.01Save up to 10% when you buy moreList price: $13.03 16% offmax_warehouse (348,848) 99%Free 2-4 day shippingFree returns
- Wiremold V5737 Extension Box Open Base, Colorr-Buff (Pack of 5)Opens in a new window or tabNew – Open box$29.99biggerjim1941 (4,093) 100%Free shipping
- 4X4 Box 1 1/4" Plaster Ring Aluminum Die Cast Extension Lot of 7Opens in a new window or tabNew – Open box$12.00Top Rated Plusbashort (10,084) 100%+$6.77 shippingFree returns
- Single Gang Box Extension Steel City T & B 25051 *NOSOpens in a new window or tabNew – Open box$4.00okeeassociatedsvcs2014 (1,706) 100%+$5.95 shipping
- Steel City 73151 1234 RD, Square Box Extension Ring, 73151 1/2 & 3/4 Red, 1 PCOpens in a new window or tabNew – Open box$8.00welchfamilymarketing (43) 100%+$6.00 shipping
- Bell 6-Outlet 3/4 In. NPT Die-Cast Aluminum Weatherproof Outdoor Box ExtensionOpens in a new window or tabBrand New$19.62simsupply (133,492) 98.5%List price: $20.99 7% offFree shipping
- Steel City 55151 1/2 3/4 4" Octagon Box Extension Ring 1-1/2" Deep Box of 25Opens in a new window or tabBrand New$79.99grandpas-basement-ny (1,594) 100%Free shipping
- Made in the U.S.A. Weatherproof Electrical Outlet Box Extension, White, (RB25AWSOpens in a new window or tabBrand New$11.86prime_shop_360 (25) 96.3%Free shippingFree returnsLast one
- RACO 250, Square Outlet Box Extension Ring, 4-11/16" Drawn, 1-1/2" Deep, 1 PCOpens in a new window or tabNew – Open box$4.98aimee8541 (28,478) 99.6%+$10.10 shipping
- Lot of 5 Wiremold 5737 Buff Extension Box Open Base.Opens in a new window or tabNew – Open box$19.90manegm.2012 (526) 99.5%+$10.90 shipping
- (5) Hubbell HBL5751IVA Rectangular Raceway LP Switch 1-Gang Extension BoxOpens in a new window or tabBrand New$24.99Top Rated Plusathomemarket (87,846) 99.8%+$25.25 shippingFree returns
- RANDL N-54034 LV DEVICE BOX EXTENSION RING, 3/4" RAISE, 1/2" DEEP, 5S TO 4"Opens in a new window or tabBrand New$5.50Save up to 7% when you buy moretoomanyamps (29,503) 99.5%Free shipping
- Panduit Single Gang Extension Junction Box JBP1EEI Qty 4Opens in a new window or tabNew – Open box$40.00texasmetalfab1227 (828) 100%Free shipping
- 1-Gang 3/4 in. Electrical Receptacle Box Extension Ring 5-PackOpens in a new window or tabBrand New$10.63lowcostshops (3,069) 98.3%Free shippingLast one
- Raco 128 15.5 cu. in. Steel Extension Ring 4 H x 4 W x 1.5 D in.Opens in a new window or tabBrand New$9.51Save up to 12% when you buy moreList price: $11.41 17% offmax_warehouse (348,848) 99%Free 2-4 day shippingFree returns
- WIREMOLD EXTENSION BOX, OPEN BASE 4 3/4" (121MM)DIAMETER V5737 LEGRANDOpens in a new window or tabBrand New$27.99Top Rated Plussosupply (730) 100%Free shippingFree returns
- Electrical Power Outlet Box Extender Kit - Single Gang Box Extender - 5 PackOpens in a new window or tabBrand New$16.99Save up to 20% when you buy moregeosat-electronics (116) 89.5%Free shipping
- NEW THOMAS&BETTS PERFECT LINE ET11-22 EXTENSION BOX 1 1/4" WITH 3 PLUGS GRAYOpens in a new window or tabNew – Open box$11.95garestoration (69,183) 99.7%Free 2-3 day shipping
- ABB 53171-1234RD Square Box Extension Ring 4" Square x 2-1/8" Deep FREE SHIPPINGOpens in a new window or tabBrand New$32.50lewisrich215 (991) 100%Free shipping
- SIEMON BE55-1C LOW VOLTAGE BOX EXTENSION RING, 1-GANG, 5/8" RAISE, 5X5" (5-PACK)Opens in a new window or tabBrand New$14.50Save up to 7% when you buy moretoomanyamps (29,503) 99.5%Free shipping
- ABB 53151-1234RD Box Extension Ring 4X 1-1/2" Deep 1/2" & 3/4" Knockouts REDOpens in a new window or tabNew – Open box$170.99expertbreaker09 (12,439) 99.8%Was: $189.99 10% offFree 2-4 day shipping
- Steel City 55151 — 1/2”-3/4”, 4 x 1-1/2” Oct Box Extension Ring, 1 Lot (25) NOSOpens in a new window or tabNew – Open box$63.00dwacu8502.8j2xmu0 (51) 100%Free shipping
- Red Dot Box Extension 4 Hole 1/2” RIHE41 S121E zatOpens in a new window or tabBrand New$6.97click-itz (2,098) 100%+$8.60 shipping
- SE450Z Weatherproof Box Extension, 1-Gang, (4) 1/2-Inch Outlets BronzeOpens in a new window or tabBrand New$16.46hayden--fraser (545) 99.3%Free shipping
- Appleton Steel Square Box Extension Ring USIPOpens in a new window or tabPre-Owned$2.00imssupply (11,306) 98.3%+$12.45 shipping
- Raco #5400-0 Grey RECT Box Extension,No EB50-6, Hubbell Electrical ProductsOpens in a new window or tabBrand New$14.99david536 (1,050) 100%Free shipping
- HUBBELL 5406-0 Outdoor Box Extension Bell Outdoor Box Of 25Opens in a new window or tabBrand New$49.9520% off 3+ with coupondeanridner (3,907) 100%+$16.70 shipping
- Square Box Extension 4"x4" E4512Opens in a new window or tabNew – Open box$4.67Save up to 10% when you buy moreWas: $9.34 50% offlfdsllc (17,344) 99.3%+$4.95 shippingFree returns
- Lot of 34 - STEEL-CITY 53151-1/2”/3/4”, 4" X 1-1/2” Square Extension Box, NOSOpens in a new window or tabNew – Open box$122.99silviasdailyfinds20 (1,234) 99.6%Free shipping
- Beckhoff EP2338-1001 Digital Input Link Extension Box 8-Channel 24VDC M8Opens in a new window or tabPre-Owned$449.99Top Rated PlusWas: $499.99 10% offmaverickindustrialsales (18,433) 99.9%Free shippingFree returns
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