Alarm SystemsBrackets and Angle IronsBreakers, Distributors, and Load CentersCable ManagementConduits and FittingsDimmers, Switches, and Wall PlatesElectrical ToolsExtension Cord ReelsExtension CordsGarage Storage SystemsHome SafetyOutletsSolderingStorage ContainersStorm & Flood PrepSurveillance
Sort by|
Extension Junction Box(485)
Uses item details. Price when purchased online
VEVOR NEMA Steel Enclosure, 12 x 10 x 6'' NEMA 4X Steel Electrical Box, IP66 Waterproof & Dustproof, Outdoor/Indoor Electrical Junction Box, with Mounting Plate $48.90
Sponsored
$4890
current price $48.90VEVOR NEMA Steel Enclosure, 12 x 10 x 6'' NEMA 4X Steel Electrical Box, IP66 Waterproof & Dustproof, Outdoor/Indoor Electrical Junction Box, with Mounting Plate
VEVOR Outdoor Electrical Junction Box, 13.78 x 9.84 x 5.90 in, ABS Plastic Electrical Enclosure Box with Hinged Cover Stainless Steel Latch, IP67 Dustproof Waterproof $36.99
Sponsored
$3699
current price $36.99VEVOR Outdoor Electrical Junction Box, 13.78 x 9.84 x 5.90 in, ABS Plastic Electrical Enclosure Box with Hinged Cover Stainless Steel Latch, IP67 Dustproof Waterproof
14 out of 5 Stars. 1 reviews
VEVOR Outdoor Electrical Junction Box, 16.93 x 12.99 x 7.09 in, ABS Plastic Electrical Enclosure Box with Hinged Cover Stainless Steel Latch, IP67 Dustproof Waterproof $61.99
Sponsored
$6199
current price $61.99VEVOR Outdoor Electrical Junction Box, 16.93 x 12.99 x 7.09 in, ABS Plastic Electrical Enclosure Box with Hinged Cover Stainless Steel Latch, IP67 Dustproof Waterproof
LINKPAL Electrical Boxes, 3PK Junction Box Outdoor 2 Way Waterproof IP68 Electrical Cable Connector, M16 Wire Range(3.5-10mm),Suitable for Repair and Extend Power Cables, UL From $12.98
Sponsored
From$1298
LINKPAL Electrical Boxes, 3PK Junction Box Outdoor 2 Way Waterproof IP68 Electrical Cable Connector, M16 Wire Range(3.5-10mm),Suitable for Repair and Extend Power Cables, UL
Shoreew Outdoor Waterproof Junction Box Heavy Duty Rain-proof Hanging Electrical Box Single Socket Connector Extension Cable Protector Enclosure From $11.11
From$1111
Shoreew Outdoor Waterproof Junction Box Heavy Duty Rain-proof Hanging Electrical Box Single Socket Connector Extension Cable Protector Enclosure
Waterproof Junction Box Extension Cords Outdoor Cord Protector Outdoor Junction Box Extension Cord Covers for outside $6.85
$685
current price $6.85Waterproof Junction Box Extension Cords Outdoor Cord Protector Outdoor Junction Box Extension Cord Covers for outside
Safety Outdoor Extension Lead Waterproof Junction Box $8.96
$896
current price $8.96Safety Outdoor Extension Lead Waterproof Junction Box
Best seller Hyper Tough PVC One-gang Box Receptacle Switch/Outlet Electrical Box TD35071Z, 4.25 in X 2.75 in X 2.25 in From $2.24
2 options
Available in additional 2 optionsFrom$224
Hyper Tough PVC One-gang Box Receptacle Switch/Outlet Electrical Box TD35071Z, 4.25 in X 2.75 in X 2.25 in
1114.7 out of 5 Stars. 111 reviews
Save with
HEANUJJ Weatherproof Junction Box Black Plastic Outdoor Electrical Extension Protector $36.23 Was $41.17
Now$3623
current price Now $36.23, Was $41.17$41.17
HEANUJJ Weatherproof Junction Box Black Plastic Outdoor Electrical Extension Protector
LINKPAL Electrical Boxes, 3PK Junction Box Outdoor 3 Way Waterproof IP68 Electrical Cable Connector, M16 Wire Range(3.5-10mm),Suitable for Repair and Extend Power Cables, UL From $12.98
3 options
Available in additional 3 optionsFrom$1298
LINKPAL Electrical Boxes, 3PK Junction Box Outdoor 3 Way Waterproof IP68 Electrical Cable Connector, M16 Wire Range(3.5-10mm),Suitable for Repair and Extend Power Cables, UL
KFFKFF Steel Electrical Box 20” x 16” x 6” Electrical Enclosure Box, Carbon Steel Hinged Junction Box $114.88 $114.88/ca
Sponsored
$11488
current price $114.88$114.88/ca
KFFKFF Steel Electrical Box 20” x 16” x 6” Electrical Enclosure Box, Carbon Steel Hinged Junction Box
Save with
KFFKFF Steel Electrical Box 24” x 16” x 10” Electrical Enclosure Box, Carbon Steel Hinged Junction Box $123.99 $123.99/ca
Sponsored
$12399
current price $123.99$123.99/ca
KFFKFF Steel Electrical Box 24” x 16” x 10” Electrical Enclosure Box, Carbon Steel Hinged Junction Box
Carlon 1/2-3/4" Rp Junction Box $19.16
$1916
current price $19.16Carlon 1/2-3/4" Rp Junction Box
15 out of 5 Stars. 1 reviews
GOOHOCHY Outdoor Extension Cord Waterproof Junction Box Office $6.39
$639
current price $6.39GOOHOCHY Outdoor Extension Cord Waterproof Junction Box Office
1Pc Waterproof Cable Junction Box Outdoor Extension Cord Cover Protector (Black) $6.99 Was $12.99
Now$699
current price Now $6.99, Was $12.99$12.99
1Pc Waterproof Cable Junction Box Outdoor Extension Cord Cover Protector (Black)
25 out of 5 Stars. 2 reviews
Junction Box Multi Outlet Electric Outdoor Extension Cord White $13.23
$1323
current price $13.23Junction Box Multi Outlet Electric Outdoor Extension Cord White
1 Pcs Cable Storage Box Electrical Extension Cord Safety Cover Outdoor Waterproof Sealed Junction Box Household Organizer $23.96
$2396
current price $23.961 Pcs Cable Storage Box Electrical Extension Cord Safety Cover Outdoor Waterproof Sealed Junction Box Household Organizer
Wiremold Box Extension 1 Gang - Rectangle PVC Electrical Box Extension - 4.75" White $13.88
$1388
current price $13.88Wiremold Box Extension 1 Gang - Rectangle PVC Electrical Box Extension - 4.75" White
WHAMVOX 3pcs Small Plastic Junction Box With Lid For Electrical Projects Outdoor Extension Cord Cover Weatherproof Electrical Boxes $6.00 Was $8.28
Now$600
current price Now $6.00, Was $8.28$8.28
WHAMVOX 3pcs Small Plastic Junction Box With Lid For Electrical Projects Outdoor Extension Cord Cover Weatherproof Electrical Boxes
TG4THT-IP68 Waterproof Junction Box Outdoor,4-Way Electrical Junction Box Outdoor with 4 Cable M25 Gland Wire Connector Extension Electrical Cable Protector for Diameter Cable 4-14mm Black $32.59
$3259
current price $32.59TG4THT-IP68 Waterproof Junction Box Outdoor,4-Way Electrical Junction Box Outdoor with 4 Cable M25 Gland Wire Connector Extension Electrical Cable Protector for Diameter Cable 4-14mm Black
KFFKFF 13.78x9.84x5.90 in Outdoor Junction Box ABS Plastic Electrical Enclosure $36.99 $36.99/ca
Sponsored
$3699
current price $36.99$36.99/ca
KFFKFF 13.78x9.84x5.90 in Outdoor Junction Box ABS Plastic Electrical Enclosure
15 out of 5 Stars. 1 reviews
Save with
SatelliteSale Weatherproof Junction Box Heavy Duty Enclosure 9x9x4 inches UV-Rated Thermoplastic Alloy Made in USA From $26.99
Sponsored
From$2699
SatelliteSale Weatherproof Junction Box Heavy Duty Enclosure 9x9x4 inches UV-Rated Thermoplastic Alloy Made in USA
234.9 out of 5 Stars. 23 reviews
Save with
Southwire Old Work Octagon Steel Box Extension $9.93
$993
current price $9.93Southwire Old Work Octagon Steel Box Extension
unbranded Waterproof Junction Box Outdoor Extension Cord Project Box Plastic Box Junction Box Outdoor Electrical Box Electrical Junction Box $10.60
$1060
current price $10.60unbranded Waterproof Junction Box Outdoor Extension Cord Project Box Plastic Box Junction Box Outdoor Electrical Box Electrical Junction Box
FRCOLOR Weatherproof Outdoor Waterproof Junction Box Office $8.09
$809
current price $8.09FRCOLOR Weatherproof Outdoor Waterproof Junction Box Office
Soimiss Electrical Extension Cord Box with Water Resistant Seal for Outdoor Use $6.76
$676
current price $6.76Soimiss Electrical Extension Cord Box with Water Resistant Seal for Outdoor Use
Junction Box Outdoor Waterproof Electrical Box,3 Way Plug Line Plastic External Junction Box,Electric Power Cord Boxes $10.07 Was $11.85
Now$1007
current price Now $10.07, Was $11.85$11.85
Junction Box Outdoor Waterproof Electrical Box,3 Way Plug Line Plastic External Junction Box,Electric Power Cord Boxes
said Outdoor Extension Cord Connection Box Outdoor Connection Box Safety Junction Box $12.69
$1269
current price $12.69said Outdoor Extension Cord Connection Box Outdoor Connection Box Safety Junction Box
Carlon Non-Metallic Multi-Gang Outlet Box Extension B1MGEXT-2 $10.59 Was $27.29
Now$1059
current price Now $10.59, Was $27.29$27.29
Carlon Non-Metallic Multi-Gang Outlet Box Extension B1MGEXT-2
Outdoor Junction Box Waterproof Dustproof Plastic Electrical Box DIY Accessory $10.15
$1015
current price $10.15Outdoor Junction Box Waterproof Dustproof Plastic Electrical Box DIY Accessory
MR Truss TJB6W Universal Corner Junction Block Box 1Way-6Way with 24 Half Conical Couplers for 6Way Installation $279.99
Sponsored
$27999
current price $279.99MR Truss TJB6W Universal Corner Junction Block Box 1Way-6Way with 24 Half Conical Couplers for 6Way Installation
MR Truss TJB2W Universal Corner Junction Block Box 1Way-6Way with 8 Half Conical Couplers for 2 Way Installation $239.99
Sponsored
$23999
current price $239.99MR Truss TJB2W Universal Corner Junction Block Box 1Way-6Way with 8 Half Conical Couplers for 2 Way Installation
KALLORY Outdoor Electrical Junction Box in Galvanized Iron for Secure Storage Silver Color $9.55 Was $11.53
Now$955
current price Now $9.55, Was $11.53$11.53
KALLORY Outdoor Electrical Junction Box in Galvanized Iron for Secure Storage Silver Color
Thomas & Betts Drawn Square Box Extension 53151-S - Durable Steel - 4" x 4" $11.36
$1136
current price $11.36Thomas & Betts Drawn Square Box Extension 53151-S - Durable Steel - 4" x 4"
Tineasur Black Plastic Outdoor Junction Box Weatherproof Electrical Box for Cable Connections $8.99
$899
current price $8.99Tineasur Black Plastic Outdoor Junction Box Weatherproof Electrical Box for Cable Connections
Zxpjkyu Outdoor Electrical Box Junction Box Multiuse Sturdy Dustproof Waterproof Circuit 17.9cmx10cmx25.3cm From $22.67
3 options
Available in additional 3 optionsFrom$2267
Zxpjkyu Outdoor Electrical Box Junction Box Multiuse Sturdy Dustproof Waterproof Circuit 17.9cmx10cmx25.3cm
NICEXMAS 1Pcs Transparent Electric Junction Box Plastic for Indoor and Outdoor Use Waterproof $13.66
$1366
current price $13.66NICEXMAS 1Pcs Transparent Electric Junction Box Plastic for Indoor and Outdoor Use Waterproof
OUNONA Connection Box Weatherproof Extension Cord Covers For Outside Waterproof Box For Outdoor Electrical Waterproof Box Outdoor Electrical Junction Box $13.23 Was $15.99
Now$1323
current price Now $13.23, Was $15.99$15.99
OUNONA Connection Box Weatherproof Extension Cord Covers For Outside Waterproof Box For Outdoor Electrical Waterproof Box Outdoor Electrical Junction Box
EFEMF-Junction Box Outdoor Waterproof Electrical Box, 3 Way Plug Line Plastic External Junction Box, Electric Power Cord Boxes Suitable for Outdoor Lights, Landscape Lighting (3way) $22.89
$2289
current price $22.89EFEMF-Junction Box Outdoor Waterproof Electrical Box, 3 Way Plug Line Plastic External Junction Box, Electric Power Cord Boxes Suitable for Outdoor Lights, Landscape Lighting (3way)
UPOUART Black Plastic Junction Box with Easy Installation for Electrical Wiring and Outdoor Indoor Use, and Weather Resistant $9.94
$994
current price $9.94UPOUART Black Plastic Junction Box with Easy Installation for Electrical Wiring and Outdoor Indoor Use, and Weather Resistant
LOLIPPYY Light Grey Plastic Electrical Junction Box for Outdoor Use with Cord Protection Features $13.37
$1337
current price $13.37LOLIPPYY Light Grey Plastic Electrical Junction Box for Outdoor Use with Cord Protection Features
Southwire Drawn 4 In. x 4 In. Square Box Extension 53151-S-UPC $12.82
$1282
current price $12.82Southwire Drawn 4 In. x 4 In. Square Box Extension 53151-S-UPC
TANOM Cord Protector Outdoor Junction Box Waterproof Connection Box Wire Cover Waterproof Junction Box Extension Cord Plastic $11.03 Was $16.30
Now$1103
current price Now $11.03, Was $16.30$16.30
TANOM Cord Protector Outdoor Junction Box Waterproof Connection Box Wire Cover Waterproof Junction Box Extension Cord Plastic
JISADER Outdoor Electrical Box Power Strip Case Wear Resistant Multipurpose Junction Box Weatherproof for Workshop Home Shopping Mall 17.9cmx10cmx25.3cm From $19.22
2 options
Available in additional 2 optionsFrom$1922
JISADER Outdoor Electrical Box Power Strip Case Wear Resistant Multipurpose Junction Box Weatherproof for Workshop Home Shopping Mall 17.9cmx10cmx25.3cm
Clearance IDEANATEGRATE Outdoor Weatherproof Extension Cord Box 1Set Black Enclosure for Electrical Line Protection $6.97 Was $10.06
Now$697
current price Now $6.97, Was $10.06$10.06
IDEANATEGRATE Outdoor Weatherproof Extension Cord Box 1Set Black Enclosure for Electrical Line Protection
Carlon Junction Box 32 Cu In Pvc 2 Gang Blue Bulk $7.95 Was $28.65
Now$795
current price Now $7.95, Was $28.65$28.65
Carlon Junction Box 32 Cu In Pvc 2 Gang Blue Bulk
Outdoor Extension Cord Box, Large Waterproof Electrical Cord Box (9.05x6.61x2.67inch) Cable Connection Safety Protector Cover IP54 Water-resistant for Power Strip, Holiday Light and Decorations
Outdoor Extension Cord Box, Large Waterproof Electrical Cord Box (9.05x6.61x2.67inch) Cable Connection Safety Protector Cover IP54 Water-resistant for Power Strip, Holiday Light and Decorations
Junction Box Outdoor Waterproof Electrical Box, 5-14mm, 3 Way Plug Line Plastic External Junction Box, Electric Power Cord Boxes Suitable for Outdoor Lights, Landscape Lighting (3way) $19.99
$1999
current price $19.99Junction Box Outdoor Waterproof Electrical Box, 5-14mm, 3 Way Plug Line Plastic External Junction Box, Electric Power Cord Boxes Suitable for Outdoor Lights, Landscape Lighting (3way)
Electrical Junction Box, Outdoor Waterproof Box Junction Box with Reserved Holes,ABS Plastic Project Box Power Cord Enclosure for Electronics,2.16x1.37x0.59" inch Waterproof Junction Box,Black
Electrical Junction Box, Outdoor Waterproof Box Junction Box with Reserved Holes,ABS Plastic Project Box Power Cord Enclosure for Electronics,2.16x1.37x0.59" inch Waterproof Junction Box,Black
Maxxima 18 cu. in. PVC Old Construction Ceiling Electrical Junction Box, Ceiling Box, ETL Listed, Gray (10 Pack) $26.99
$2699
current price $26.99Maxxima 18 cu. in. PVC Old Construction Ceiling Electrical Junction Box, Ceiling Box, ETL Listed, Gray (10 Pack)
Save with
Other options to consider(45)
Popular in Extension Junction Box
Related Products
Outdoor Waterproof Junction Box Surfaces Mounted Underground Electrical Junction Box Cable Connectors Easy to Install
Outdoor Waterproof Junction Box Surfaces Mounted Underground Electrical Junction Box Cable Connectors Easy to Install$21.21current price $21.21Outdoor Junction Box 2 Way Plug Line Underground Electrical Junction Box Cable Connector
Outdoor Junction Box 2 Way Plug Line Underground Electrical Junction Box Cable Connector$10.97current price $10.97Plastic Outdoor Electrical Connection Box Waterproof Connection Cable Enclosure
Plastic Outdoor Electrical Connection Box Waterproof Connection Cable Enclosure$34.10current price $34.10Cable Management Box Outdoor Extension Leads Covers Outdoor Electrical Box Electric Outlet Protector Enduring
Cable Management Box Outdoor Extension Leads Covers Outdoor Electrical Box Electric Outlet Protector Enduring$14.69current price $14.69LOLIPPYY 1Pc Outdoor Waterproof Cord Junction Box with Reinforced Material in Black
LOLIPPYY 1Pc Outdoor Waterproof Cord Junction Box with Reinforced Material in Black$10.29current price $10.29Southwire 52C18-UPC 4 x 0.75 in. Steel Metallic 2-Gang 2-Device Square Cover
Southwire 52C18-UPC 4 x 0.75 in. Steel Metallic 2-Gang 2-Device Square Cover$16.04current price $16.04Arlington - Dri-Box Adapters with Non-Metallic Cover and Base - Vertical - Single Gang - Clear - DBPV1C
Arlington - Dri-Box Adapters with Non-Metallic Cover and Base - Vertical - Single Gang - Clear - DBPV1C$9.54current price $9.541PC Southwire Weatherproof Round Box Cover
1PC Southwire Weatherproof Round Box Cover$11.99current price $11.99Hubbell Wiring Device-Kellems Deep Extension Box,Ivory,Steel,Boxes HBL5751AIVA
Hubbell Wiring Device-Kellems Deep Extension Box,Ivory,Steel,Boxes HBL5751AIVA$21.42current price $21.42Homeline 125a Load Center HOM816L125PC
Homeline 125a Load Center HOM816L125PC$71.22current price $71.22Carlon HB1DP Duplex Handy Box Cover, PVC - Quantity 25
Carlon HB1DP Duplex Handy Box Cover, PVC - Quantity 25$50.37current price $50.37Wiremold Three Gang Box Fitting,Ivory,Steel V5748-3
Wiremold Three Gang Box Fitting,Ivory,Steel V5748-3$48.63current price $48.63Hoffman A12R124 NEMA 3R Enclosure, Screw Cover, Galvanized, Paint Finish
Hoffman A12R124 NEMA 3R Enclosure, Screw Cover, Galvanized, Paint Finish$59.20current price $59.20Arlington EB0708 Heavy-Duty Non-Metallic Enclosure Box 7" x 8" x 3.5"
Arlington EB0708 Heavy-Duty Non-Metallic Enclosure Box 7" x 8" x 3.5"$36.30current price $36.30Wiremold GFCI Box Fitting,Ivory,Steel V5744
Wiremold GFCI Box Fitting,Ivory,Steel V5744$30.74current price $30.74
