Shop utility box extension

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Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
$2.59
New Feedonomics Feed - ARC 8/12/2025
Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
$2.59
New Feedonomics Feed - ARC 8/12/2025
Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
$7.29
New Feedonomics Feed - ARC 8/12/2025
Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
$7.29
New Feedonomics Feed - ARC 8/12/2025
Garvin Tbx-225 Masonry Box Extension Ring 2-Gang 2-1/2" Deep
$38.69
New Feedonomics Feed - ARC 8/12/2025
Garvin Tbx-225 Masonry Box Extension Ring 2-Gang 2-1/2" Deep
$38.69
New Feedonomics Feed - ARC 8/12/2025
Garvin Bex-450 4" Sq Box Extender 1/2" Raised
$4.39
New Feedonomics Feed - ARC 8/12/2025
Garvin Bex-450 4" Sq Box Extender 1/2" Raised
$4.39
New Feedonomics Feed - ARC 8/12/2025
Garvin 73171-Sub 4-11/16" Welded Extension Box Converts 1-Gang To 4-11/16" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
$13.79
New Feedonomics Feed - ARC 8/12/2025
Garvin 73171-Sub 4-11/16" Welded Extension Box Converts 1-Gang To 4-11/16" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
$13.79
New Feedonomics Feed - ARC 8/12/2025
Garvin Dex-150 1 Gang Multi-Gang Device Extender 1/2" Raised
$4.19
New Feedonomics Feed - ARC 8/12/2025
Garvin Dex-150 1 Gang Multi-Gang Device Extender 1/2" Raised
$4.19
New Feedonomics Feed - ARC 8/12/2025
Garvin Bex-475 4" Sq Box Extender 3/4" Raised
$4.79
New Feedonomics Feed - ARC 8/12/2025
Garvin Bex-475 4" Sq Box Extender 3/4" Raised
$4.79
New Feedonomics Feed - ARC 8/12/2025
Mint Bucket Brands 1/2" Single Gang Receptacle Box Extenders, UL Listed With 6-32 X 1.25 Screws, Electrical Outlet Extender For Switches (Blue) (Pack
$18.95
Amazon.com
77
Mint Bucket Brands 1/2" Single Gang Receptacle Box Extenders, UL Listed With 6-32 X 1.25 Screws, Electrical Outlet Extender For Switches (Blue) (Pack
$18.95
Amazon.com
Raco 0665 4" X 2" Handy Box Extension, 1-7/8" Deep, 1/2" End Knockouts
$5.45
$7.97
Amazon.com
Free shipping
31% off
Raco 0665 4" X 2" Handy Box Extension, 1-7/8" Deep, 1/2" End Knockouts
$5.45
$7.97
Amazon.com
Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 111
$11.86
Lowe's
47
Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 111
$11.86
Lowe's
CANTEX Plastic Old Work Box Extender Electrical Box In Gray | LEZSO-EXT
$5.76
Lowe's
81
CANTEX Plastic Old Work Box Extender Electrical Box In Gray | LEZSO-EXT
$5.76
Lowe's
Mint Bucket Brands 3/4" Single Gang Receptacle Outlet Box Extenders - UL Listed - Electrical Outlet Extender For Electrical Box And Electrical Outlet
$16.95
Amazon.com
14
Mint Bucket Brands 3/4" Single Gang Receptacle Outlet Box Extenders - UL Listed - Electrical Outlet Extender For Electrical Box And Electrical Outlet
$16.95
Amazon.com
Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 130
$3.98
Lowe's
45
Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 130
$3.98
Lowe's
Oatey 37565 Moda Box Extension | Supplyhouse.Com
$4.11
SupplyHouse.com
Oatey 37565 Moda Box Extension | Supplyhouse.Com
$4.11
SupplyHouse.com
4 in. 21 Cu. In. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)
$5.57
Home Depot
In store
10
Free shipping
Curbside
4 in. 21 Cu. In. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)
$5.57
Home Depot
Southwire Old Work Octagon Steel Box Extension
$4.99
Ace Hardware
Southwire Old Work Octagon Steel Box Extension
$4.99
Ace Hardware
4 in. 1-1/2 in. New Work Deep Pre-Galvanized Metal Octagon Electrical Box Extension Ring (551511234-25R)
$3.11
Home Depot
In store
47
Free shipping
Curbside
4 in. 1-1/2 in. New Work Deep Pre-Galvanized Metal Octagon Electrical Box Extension Ring (551511234-25R)
$3.11
Home Depot
Appleton Electric Cast Box Extension: Tandem Box Extension, Iron, Gray, 1 Model: FS-1EXT
$72.95
Grainger
Appleton Electric Cast Box Extension: Tandem Box Extension, Iron, Gray, 1 Model: FS-1EXT
$72.95
Grainger
NDS D600E-EXT 14" X 19" X 6" Box Extension (Black) | Supplyhouse.Com
$37.58
SupplyHouse.com
1
NDS D600E-EXT 14" X 19" X 6" Box Extension (Black) | Supplyhouse.Com
$37.58
SupplyHouse.com
Weatherproof Box Extension, 1 Gang, (2) 1/2" Outlets, 1-1/2" Deep, Aluminum Die Cast By Hubbell-Raco 5399-0
$18.10
Electrical Parts
92
Weatherproof Box Extension, 1 Gang, (2) 1/2" Outlets, 1-1/2" Deep, Aluminum Die Cast By Hubbell-Raco 5399-0
$18.10
Electrical Parts
Weatherproof Box Extension, 1 Gang, (2) 3/4" Outlets, 1-1/2" Deep, Aluminum Die Cast By Hubbell-Raco 5403-0
$18.15
Electrical Parts
Weatherproof Box Extension, 1 Gang, (2) 3/4" Outlets, 1-1/2" Deep, Aluminum Die Cast By Hubbell-Raco 5403-0
$18.15
Electrical Parts
Orbit Handy Box Switch Box Extension Steel 1-Gang 1-1/2" Deep 10220220
$3.86
DkHardware.com
Orbit Handy Box Switch Box Extension Steel 1-Gang 1-1/2" Deep 10220220
$3.86
DkHardware.com
Double Box Extender | Storewall
$11.99
RJK Investments DBA storeWALL
Double Box Extender | Storewall
$11.99
RJK Investments DBA storeWALL
Weatherproof Box Extension, 1 Gang, (2) 1/2" Outlets, 1-1/2" Deep, Aluminum Die Cast By Hubbell-Raco 5412-0
$40.86
Electrical Parts
58
Weatherproof Box Extension, 1 Gang, (2) 1/2" Outlets, 1-1/2" Deep, Aluminum Die Cast By Hubbell-Raco 5412-0
$40.86
Electrical Parts
Southwire New And Old Work Rectangle Galvanized Steel Box Extension Ring
$6.99
Ace Hardware
Southwire New And Old Work Rectangle Galvanized Steel Box Extension Ring
$6.99
Ace Hardware
Cantex EZ Box New And Old Work Square PVC 1 Gang Box Extension Gray
$3.99
Ace Hardware
17
Cantex EZ Box New And Old Work Square PVC 1 Gang Box Extension Gray
$3.99
Ace Hardware
Steel City 59361-1/2 4 X 2-1/8 X 1-7/8 Steel Handy/Utility Box Extension Ring, 13 Cu.In.
$505.13
Voomi Supply
1
Steel City 59361-1/2 4 X 2-1/8 X 1-7/8 Steel Handy/Utility Box Extension Ring, 13 Cu.In.
$505.13
Voomi Supply
Hubbell Raco Steel Electrical Box Extension Ring 665 - 47965645
$7.11
Penn Tool Co
Hubbell Raco Steel Electrical Box Extension Ring 665 - 47965645
$7.11
Penn Tool Co
Steel City 59361-1/2 Handy/Utility Outlet Box Extension Ring, Drawn Construction, 4-Inch Length By 2-1/8-Inch Width By 1-7/8-Inch Depth, Galvanized
$13.65
Walmart
1
Free shipping
Steel City 59361-1/2 Handy/Utility Outlet Box Extension Ring, Drawn Construction, 4-Inch Length By 2-1/8-Inch Width By 1-7/8-Inch Depth, Galvanized
$13.65
Walmart
Hubbell/Raco 653 Handy Box Extension, 4 X 2 Inch 1 1/2 Inch Deep
$2.41
Hardware World
Hubbell/Raco 653 Handy Box Extension, 4 X 2 Inch 1 1/2 Inch Deep
$2.41
Hardware World
NDS Products 113-6 14 X 19 X 6 Standard Series Box Extension (Black)
$41.09
Voomi Supply
6
NDS Products 113-6 14 X 19 X 6 Standard Series Box Extension (Black)
$41.09
Voomi Supply
NDS 119 13" X 20" X 6" Standard Series Irrigation Control Valve Jumbo Extension Box (Black Box/Green Cover) | Supplyhouse.Com
$49.48
SupplyHouse.com
1
NDS 119 13" X 20" X 6" Standard Series Irrigation Control Valve Jumbo Extension Box (Black Box/Green Cover) | Supplyhouse.Com
$49.48
SupplyHouse.com
4-11/16 in. 2-Gang New Work Square Metal Electrical Box Extension Ring (73151 1/2 3/4)
$9.84
Home Depot
2
Free shipping
4-11/16 in. 2-Gang New Work Square Metal Electrical Box Extension Ring (73151 1/2 3/4)
$9.84
Home Depot
Multiple 665 Handy Box Extension 1-7/8in Deep 1/2in KO
$14.99
Voomi Supply
Multiple 665 Handy Box Extension 1-7/8in Deep 1/2in KO
$14.99
Voomi Supply
Raco 0665 4" X 2" Handy Box Extension, 1-7/8" Deep, 1/2" End Knockouts
$9.06
Walmart
Free shipping
Raco 0665 4" X 2" Handy Box Extension, 1-7/8" Deep, 1/2" End Knockouts
$9.06
Walmart
HUBBELL ELECTRICAL PRODUCTS 1 Gang Rectangular Electrical Box Extension Gray EB50-6
$15.81
DkHardware.com
HUBBELL ELECTRICAL PRODUCTS 1 Gang Rectangular Electrical Box Extension Gray EB50-6
$15.81
DkHardware.com
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    Shop utility box extension

    Sponsored
    About our ads
    Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
    $2.59
    New Feedonomics Feed - ARC 8/12/2025
    Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
    $2.59
    New Feedonomics Feed - ARC 8/12/2025
    Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
    $7.29
    New Feedonomics Feed - ARC 8/12/2025
    Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
    $7.29
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Tbx-225 Masonry Box Extension Ring 2-Gang 2-1/2" Deep
    $38.69
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Tbx-225 Masonry Box Extension Ring 2-Gang 2-1/2" Deep
    $38.69
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Bex-450 4" Sq Box Extender 1/2" Raised
    $4.39
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Bex-450 4" Sq Box Extender 1/2" Raised
    $4.39
    New Feedonomics Feed - ARC 8/12/2025
    Garvin 73171-Sub 4-11/16" Welded Extension Box Converts 1-Gang To 4-11/16" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
    $13.79
    New Feedonomics Feed - ARC 8/12/2025
    Garvin 73171-Sub 4-11/16" Welded Extension Box Converts 1-Gang To 4-11/16" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
    $13.79
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Dex-150 1 Gang Multi-Gang Device Extender 1/2" Raised
    $4.19
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Dex-150 1 Gang Multi-Gang Device Extender 1/2" Raised
    $4.19
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Bex-475 4" Sq Box Extender 3/4" Raised
    $4.79
    New Feedonomics Feed - ARC 8/12/2025
    Garvin Bex-475 4" Sq Box Extender 3/4" Raised
    $4.79
    New Feedonomics Feed - ARC 8/12/2025
    Mint Bucket Brands 1/2" Single Gang Receptacle Box Extenders, UL Listed With 6-32 X 1.25 Screws, Electrical Outlet Extender For Switches (Blue) (Pack
    $18.95
    Amazon.com
    77
    Mint Bucket Brands 1/2" Single Gang Receptacle Box Extenders, UL Listed With 6-32 X 1.25 Screws, Electrical Outlet Extender For Switches (Blue) (Pack
    $18.95
    Amazon.com
    Raco 0665 4" X 2" Handy Box Extension, 1-7/8" Deep, 1/2" End Knockouts
    $5.45
    $7.97
    Amazon.com
    Free shipping
    31% off
    Raco 0665 4" X 2" Handy Box Extension, 1-7/8" Deep, 1/2" End Knockouts
    $5.45
    $7.97
    Amazon.com
    Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 111
    $11.86
    Lowe's
    47
    Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 111
    $11.86
    Lowe's
    CANTEX Plastic Old Work Box Extender Electrical Box In Gray | LEZSO-EXT
    $5.76
    Lowe's
    81
    CANTEX Plastic Old Work Box Extender Electrical Box In Gray | LEZSO-EXT
    $5.76
    Lowe's
    Mint Bucket Brands 3/4" Single Gang Receptacle Outlet Box Extenders - UL Listed - Electrical Outlet Extender For Electrical Box And Electrical Outlet
    $16.95
    Amazon.com
    14
    Mint Bucket Brands 3/4" Single Gang Receptacle Outlet Box Extenders - UL Listed - Electrical Outlet Extender For Electrical Box And Electrical Outlet
    $16.95
    Amazon.com
    Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 130
    $3.98
    Lowe's
    45
    Hubbell RACO Galvanized Steel New Work/Old Work Box Extender Electrical Box In Gray | 130
    $3.98
    Lowe's
    Oatey 37565 Moda Box Extension | Supplyhouse.Com
    $4.11
    SupplyHouse.com
    Oatey 37565 Moda Box Extension | Supplyhouse.Com
    $4.11
    SupplyHouse.com
    4 in. 21 Cu. In. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)
    $5.57
    Home Depot
    In store
    10
    Free shipping
    Curbside
    4 in. 21 Cu. In. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)
    $5.57
    Home Depot
    Southwire Old Work Octagon Steel Box Extension
    $4.99
    Ace Hardware
    Southwire Old Work Octagon Steel Box Extension
    $4.99
    Ace Hardware
    4 in. 1-1/2 in. New Work Deep Pre-Galvanized Metal Octagon Electrical Box Extension Ring (551511234-25R)
    $3.11
    Home Depot
    In store
    47
    Free shipping
    Curbside
    4 in. 1-1/2 in. New Work Deep Pre-Galvanized Metal Octagon Electrical Box Extension Ring (551511234-25R)
    $3.11
    Home Depot
    Appleton Electric Cast Box Extension: Tandem Box Extension, Iron, Gray, 1 Model: FS-1EXT
    $72.95
    Grainger
    Appleton Electric Cast Box Extension: Tandem Box Extension, Iron, Gray, 1 Model: FS-1EXT
    $72.95
    Grainger
    • Amazon
      https://www.amazon.com › Shop › utility box extension
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      DealDeal

      Utility Box Extension | Huge in-stock Item Inventory

      SponsoredOur customers get 1-click shopping experiences, personalized recommendations and more. Grab exciting offers and discounts on an array of products from popular brands.
    • The Home Depot
      https://www.homedepot.com › Electrical
      About our ads

      The Home Depot® - Shop Box Extenders

      SponsoredSave on Electrical Boxes, Conduit & Fittings for Every Project at The Home Depot®. Shop Everyday Low Prices. Free Shipping on Over 1M Items.