Knockout Electrical Box(338)
Uses item details. Price when purchased online
SatelliteSale Weatherproof Junction Box Heavy Duty Enclosure 9x9x4 inches UV-Rated Thermoplastic Alloy Made in USA From $28.99

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From$2899
SatelliteSale Weatherproof Junction Box Heavy Duty Enclosure 9x9x4 inches UV-Rated Thermoplastic Alloy Made in USA
264.9 out of 5 Stars. 26 reviews
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New Work Electrical Outlet Box, 22 Cu. in, Outlet Box,ETL Listed to UL514C and UL263, 2 Hour Fire Rating single gang box, Gray,100 PCS From $64.99

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From$6499
New Work Electrical Outlet Box, 22 Cu. in, Outlet Box,ETL Listed to UL514C and UL263, 2 Hour Fire Rating single gang box, Gray,100 PCS
15 out of 5 Stars. 1 reviews
Kohree 50 Amp Generator Power Inlet Box, NEMA SS2-50P for 3R Generator Cord Receptacle, 125/250V,12500W RV Weatherproof Generator Transfer Switch Inlet Box, ETL Listed From $34.19 Was $39.99

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From$3419
$39.99
Kohree 50 Amp Generator Power Inlet Box, NEMA SS2-50P for 3R Generator Cord Receptacle, 125/250V,12500W RV Weatherproof Generator Transfer Switch Inlet Box, ETL Listed
54.8 out of 5 Stars. 5 reviews
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HIITIO 60 Amp 240V Fused AC Disconnect Box - Outdoor Waterproof Metal Electrical Enclosure with Safety Switch for HVAC, Air Conditioners & Heat Pumps - UL Listed $26.58

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$2658
current price $26.58HIITIO 60 Amp 240V Fused AC Disconnect Box - Outdoor Waterproof Metal Electrical Enclosure with Safety Switch for HVAC, Air Conditioners & Heat Pumps - UL Listed
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Strong Galvanized Steel Junction Box Octagonal Shape 4x4inch Size Includes Multiple Knockout Holes for Wiring Use $10.66

$1066
current price $10.66Strong Galvanized Steel Junction Box Octagonal Shape 4x4inch Size Includes Multiple Knockout Holes for Wiring Use
OHLECTRIC 4” Round Steel Pancake Electrical Box (4 Pack)| 1/2" Deep Box with Four 1/2” Knockouts, Fire Rated | Ideal for Lighting Fixtures, Switches and Receptacles From $23.99

4 options
Available in additional 4 optionsFrom$2399
OHLECTRIC 4” Round Steel Pancake Electrical Box (4 Pack)| 1/2" Deep Box with Four 1/2” Knockouts, Fire Rated | Ideal for Lighting Fixtures, Switches and Receptacles
Thomas & Betts 52171 3-4-30 4 x 2.13 in. Square Box with 0.75 in. Knockouts $9.99

$999
current price $9.99Thomas & Betts 52171 3-4-30 4 x 2.13 in. Square Box with 0.75 in. Knockouts
Raco Electrical Box,Handy,1/2 in. Knockout 681 $16.25

$1625
current price $16.25Raco Electrical Box,Handy,1/2 in. Knockout 681
Four 4" Ceiling Electrical Box Galvanized Steel,Pancake Box for Ceiling Fan and Wall Lighting Fixtures,Drawn Construction,1/2" Deep, 4 * 1/2" Bottom Knockouts,Raised Ground $17.99

$1799
current price $17.99Four 4" Ceiling Electrical Box Galvanized Steel,Pancake Box for Ceiling Fan and Wall Lighting Fixtures,Drawn Construction,1/2" Deep, 4 * 1/2" Bottom Knockouts,Raised Ground
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Raco Electrical Box,Handy,1/2&3/4 in Knockout 683 $12.85

$1285
current price $12.85Raco Electrical Box,Handy,1/2&3/4 in Knockout 683
10 Pcs 1 Gang Plastic Electrical Box, ETL Certified PVC Junction Box, Shallow Design for Wiring Conduits and Switches, 2-Hour Fire Rated for Safe Installations $22.98 Was $25.98

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Now$2298
current price Now $22.98, Was $25.98$25.98
10 Pcs 1 Gang Plastic Electrical Box, ETL Certified PVC Junction Box, Shallow Design for Wiring Conduits and Switches, 2-Hour Fire Rated for Safe Installations
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Journeyman-Pro PIB-L5-30P Black 4.13"x 6.10"x 4.13", 1 Gang Steel Generator Inlet Electrical Box From $49.99

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From$4999
Journeyman-Pro PIB-L5-30P Black 4.13"x 6.10"x 4.13", 1 Gang Steel Generator Inlet Electrical Box
45 out of 5 Stars. 4 reviews
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Raco Electrical Box 8232 - Welded Square Box, Side Knockouts, Screw-in - 4 in x 2-1/8 in Deep $10.84

$1084
current price $10.84Raco Electrical Box 8232 - Welded Square Box, Side Knockouts, Screw-in - 4 in x 2-1/8 in Deep
THOMAS & BETTS Adjust-A-Box Electrical Box With Range Knock Out, 2-Gang, Non-Metallic B234ADJC $17.29 Was $24.99

Now$1729
current price Now $17.29, Was $24.99$24.99
THOMAS & BETTS Adjust-A-Box Electrical Box With Range Knock Out, 2-Gang, Non-Metallic B234ADJC
Reduced price Airmont Weatherproof 2-Gang Outdoor Electrical Box Solid Die-Cast Aluminum, 3 -In Knockouts, Precision-Machined for Dual Outlets or Switches on Patios, Decks, Garages & Wet-Location Installs $18.89 Was $20.99

Now$1889
current price Now $18.89, Was $20.99$20.99
Airmont Weatherproof 2-Gang Outdoor Electrical Box Solid Die-Cast Aluminum, 3 -In Knockouts, Precision-Machined for Dual Outlets or Switches on Patios, Decks, Garages & Wet-Location Installs
RACO 518 1-Gang Steel Electrical Box 4.22" Galvanized 5 Knockouts (Gray) Was $33.81

RACO 518 1-Gang Steel Electrical Box 4.22" Galvanized 5 Knockouts (Gray)
Southwire Handy Box Electrical Boxes Knockout - Plastic - 1 Piece $14.57

$1457
current price $14.57Southwire Handy Box Electrical Boxes Knockout - Plastic - 1 Piece
RACO 4" Square Electrical Box With 12 Side & 5 Bottom Knockouts - Electrical Knockout $9.12

$912
current price $9.12RACO 4" Square Electrical Box With 12 Side & 5 Bottom Knockouts - Electrical Knockout
RACO Handy Box Junction Box - 1-Gang, 7-Knockout, Steel, Gray $7.85

$785
current price $7.85RACO Handy Box Junction Box - 1-Gang, 7-Knockout, Steel, Gray
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Peerless-av Peerless-av In-wall Metal Box With Knockout (large; Without Power Outlet) $88.48

$8848
current price $88.48Peerless-av Peerless-av In-wall Metal Box With Knockout (large; Without Power Outlet)
HIITIO 60A 240V Non-Fused AC Disconnect Box, Outdoor Waterproof Metal Enclosure Safety Switch for HVAC, Air Conditioner, Heat Pump, UL Listed (NEMA 3R) $22.39 Was $27.99

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Now$2239
current price Now $22.39, Was $27.99$27.99
HIITIO 60A 240V Non-Fused AC Disconnect Box, Outdoor Waterproof Metal Enclosure Safety Switch for HVAC, Air Conditioner, Heat Pump, UL Listed (NEMA 3R)
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HIITIO 240V 30A AC Disconnect Box, Fused 1 Phase 3-Wire, Outdoor Waterproof Metal Enclosure with Pull-Out Switch for HVAC, Air Conditioner & Condenser Units - UL Listed $25.99

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$2599
current price $25.99HIITIO 240V 30A AC Disconnect Box, Fused 1 Phase 3-Wire, Outdoor Waterproof Metal Enclosure with Pull-Out Switch for HVAC, Air Conditioner & Condenser Units - UL Listed
24.5 out of 5 Stars. 2 reviews
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Thomas & Betts Handy Box Electrical Boxes Knockout Wire Holder - 10-Knockout - 2-1/8 x 4 x 2-1/8 In. $23.62

$2362
current price $23.62Thomas & Betts Handy Box Electrical Boxes Knockout Wire Holder - 10-Knockout - 2-1/8 x 4 x 2-1/8 In.
4 Pack Octagon Stainless Steel Electrical Junction Box, 4" Square Drawn Metal Box, 1-1/2" Deep, 15.5 Cu In, UL Listed, 4 1/2" & 4 3/4" Knockouts $14.39 Was $15.99

Now$1439
current price Now $14.39, Was $15.99$15.99
4 Pack Octagon Stainless Steel Electrical Junction Box, 4" Square Drawn Metal Box, 1-1/2" Deep, 15.5 Cu In, UL Listed, 4 1/2" & 4 3/4" Knockouts
Orbit Industries 5SDB-MKO 5S Box 2.125 in. Deep M Knockout $15.32

$1532
current price $15.32Orbit Industries 5SDB-MKO 5S Box 2.125 in. Deep M Knockout
Two Galvanized Steel Round Shallow Electrical Box,Drawn Construction, Metal Pancake Box for Outlets with 4 inch Diameter,1/2" Deep,4 * 1/2" Bottom Knockouts,Thickness 1.6mm $8.99

$899
current price $8.99Two Galvanized Steel Round Shallow Electrical Box,Drawn Construction, Metal Pancake Box for Outlets with 4 inch Diameter,1/2" Deep,4 * 1/2" Bottom Knockouts,Thickness 1.6mm
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RACO 8190 Outlet Box Knockout Cable Entry 16-Knockout Steel $6.99

$699
current price $6.99RACO 8190 Outlet Box Knockout Cable Entry 16-Knockout Steel
Four Set of 4x4 Electrical Box and Electrical Outlet Cover With 4×6 screws,2-Gang Duplex Receptacle Box,8*1/2''&4*3/4"in Side and 2*1/2''& 2*3/4" in Bottom Knockouts,Square Metal Electrical Box From $8.11
From$811
Four Set of 4x4 Electrical Box and Electrical Outlet Cover With 4×6 screws,2-Gang Duplex Receptacle Box,8*1/2''&4*3/4"in Side and 2*1/2''& 2*3/4" in Bottom Knockouts,Square Metal Electrical Box
15 out of 5 Stars. 1 reviews
4 Welded Octagon Steel Electrical Box| 1-1/2" Deep Box 1/2 Knockouts with Side Bracket, Fire Rated | Ideal for Lighting Fixtures, Switches and Receptacles (4-Pack) $45.88

$4588
current price $45.884 Welded Octagon Steel Electrical Box| 1-1/2" Deep Box 1/2 Knockouts with Side Bracket, Fire Rated | Ideal for Lighting Fixtures, Switches and Receptacles (4-Pack)
Hubbell Welded Masonry Electrical Box 1 Gang - 8 Concentric Knockouts - 3-3/4" x 1-31/32" $14.21

$1421
current price $14.21Hubbell Welded Masonry Electrical Box 1 Gang - 8 Concentric Knockouts - 3-3/4" x 1-31/32"
KFFKFF 9" in-Wall Media Box, Media Enclosure with Cover for Cable Management, Robust Cold-Rolled Steel Recessed Storage Box, Suitable for Home Theater TV, White $34.99

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$3499
current price $34.99KFFKFF 9" in-Wall Media Box, Media Enclosure with Cover for Cable Management, Robust Cold-Rolled Steel Recessed Storage Box, Suitable for Home Theater TV, White
KFFKFF 42-Inch Media Enclosure, Structured Media Center with Breathable Pivoting Door, Cable Management Box, Comprehensive Wiring Versatile Cabinet, Recessed Electrical Media Shell $88.99

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$8899
current price $88.99KFFKFF 42-Inch Media Enclosure, Structured Media Center with Breathable Pivoting Door, Cable Management Box, Comprehensive Wiring Versatile Cabinet, Recessed Electrical Media Shell
15 out of 5 Stars. 1 reviews
Steel City 541511/2 4" Octagon Electrical Box, 15.8 Cubic Inches, 1-1/2" Deep, 1/2" Knockouts, Pre-Galvanized Steel, Drawn Construction $8.20

$820
current price $8.20Steel City 541511/2 4" Octagon Electrical Box, 15.8 Cubic Inches, 1-1/2" Deep, 1/2" Knockouts, Pre-Galvanized Steel, Drawn Construction
Hubbell Handy Box Knockout Combo - Steel, Rectangle, 1 Gang, Silver $8.22

$822
current price $8.22Hubbell Handy Box Knockout Combo - Steel, Rectangle, 1 Gang, Silver
Reduced price Pack of 12 4x2 Inch Utility Size Single Gang Electrical Box, Handy Box, Ten 1/2 Inch Knockouts, Raised Ground, 13 Cu. in. Capacity, 1-7/8" Deep, Galvanized Steel, Drawn Construction, Outlet Box, $37.79 Was $41.99

Now$3779
current price Now $37.79, Was $41.99$41.99
Pack of 12 4x2 Inch Utility Size Single Gang Electrical Box, Handy Box, Ten 1/2 Inch Knockouts, Raised Ground, 13 Cu. in. Capacity, 1-7/8" Deep, Galvanized Steel, Drawn Construction, Outlet Box,
4 Inch Round Outdoor Electrical Box with Cover, Die-Cast Aluminum, IP65 Weatherproof, Six 1/2-Inch Knockouts, UL Listed, 16 Cubic Inch, Brown From $9.99

2 options
Available in additional 2 optionsFrom$999
4 Inch Round Outdoor Electrical Box with Cover, Die-Cast Aluminum, IP65 Weatherproof, Six 1/2-Inch Knockouts, UL Listed, 16 Cubic Inch, Brown
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509 Knockouts Old Work Switch Box $47.58

$4758
current price $47.58509 Knockouts Old Work Switch Box
OHLECTRIC 4 in Square Drawn Steel Electrical Box, 1-1/2 in Deep, 1/2 in & 3/4 in Knockouts, Raised Ground Emboss, Galvanized Steel, 4-Pack $40.00

$4000
current price $40.00OHLECTRIC 4 in Square Drawn Steel Electrical Box, 1-1/2 in Deep, 1/2 in & 3/4 in Knockouts, Raised Ground Emboss, Galvanized Steel, 4-Pack
Hubbell Handy Box Single Gang Four 3/4 In. Knockouts 1-7/8 In. Deep $18.71

$1871
current price $18.71Hubbell Handy Box Single Gang Four 3/4 In. Knockouts 1-7/8 In. Deep
4" Square Electrical Box with Cover, 1-1/2" Deep Metal Electrical Box, Ten 1/2'' and Six 3/4'' Knockouts, Galvanized Steel, 21.0 Cu. in. Capacity Junction Box Metal $42.48

$4248
current price $42.484" Square Electrical Box with Cover, 1-1/2" Deep Metal Electrical Box, Ten 1/2'' and Six 3/4'' Knockouts, Galvanized Steel, 21.0 Cu. in. Capacity Junction Box Metal
OHLECTRIC 4-Pack 4" Drawn Square Electrical Box with 1/2 & 3/4-Inch Knockouts | 2-1/8" Deep Junction Box, Made of Galvanized Steel | Ideal for Lighting Fixtures, Switches and Receptacles | UL Listed From $19.99

5 options
Available in additional 5 optionsFrom$1999
OHLECTRIC 4-Pack 4" Drawn Square Electrical Box with 1/2 & 3/4-Inch Knockouts | 2-1/8" Deep Junction Box, Made of Galvanized Steel | Ideal for Lighting Fixtures, Switches and Receptacles | UL Listed
RACO Square Electrical Box 8265 - 3/4" & 1" Knockouts - 4-11/16" Size Home & Garage Storage, Stackable Design $56.66

$5666
current price $56.66RACO Square Electrical Box 8265 - 3/4" & 1" Knockouts - 4-11/16" Size Home & Garage Storage, Stackable Design
Hubbell-Raco 506 Switch Box with Plaster Ears, Old Work, 2-1/2" Depth, 1/2" Knockout Pack of 16 Home & Garage Storage, Stackable Design $140.26

$14026
current price $140.26Hubbell-Raco 506 Switch Box with Plaster Ears, Old Work, 2-1/2" Depth, 1/2" Knockout Pack of 16 Home & Garage Storage, Stackable Design
MK - 2-Gang Steel Surface Back Box with Knockouts $49.95

$4995
current price $49.95MK - 2-Gang Steel Surface Back Box with Knockouts
Peerless-av Iba3-w In-wall Metal Box With Knockout (medium) $81.73

$8173
current price $81.73Peerless-av Iba3-w In-wall Metal Box With Knockout (medium)
(4 Pack) 4'' Square Electrical Box, Knockouts, Welded Construction, apacity, Raised Ground, Combination Screw Heads, Galvanized Steel $33.00

$3300
current price $33.00(4 Pack) 4'' Square Electrical Box, Knockouts, Welded Construction, apacity, Raised Ground, Combination Screw Heads, Galvanized Steel
RACO Electrical Box Handy Knockout - 1/2 & 3/4 Knockouts Multicolor $24.10

$2410
current price $24.10RACO Electrical Box Handy Knockout - 1/2 & 3/4 Knockouts Multicolor
MK - 1-Gang Steel Surface Back Box with Knockouts, 40mm Depth $66.95

$6695
current price $66.95MK - 1-Gang Steel Surface Back Box with Knockouts, 40mm Depth
OHLECTRIC 4 in. Round Ceiling Pan Electrical Box, 1/2 in. Deep, 6 Cu. In., 4 Knockouts, Steel Fixture and Cable Box, 6-Pack $19.99

$1999
current price $19.99OHLECTRIC 4 in. Round Ceiling Pan Electrical Box, 1/2 in. Deep, 6 Cu. In., 4 Knockouts, Steel Fixture and Cable Box, 6-Pack
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