Bathroom PlumbingBreakers, Distributors, and Load CentersConduits and FittingsDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareEmergency SuppliesExtension CordsFastenersHome SafetyOutletsPersonal PreparednessPipes, Fittings & AccessoriesSafes & LockboxesStorm & Flood Prep

Box Knockout Plug

Uses item details. Price when purchased online

RVGUARD 50 Amp 125/250 Volt RV/EV Power Outlet Box, Enclosed Lockable Weatherproof Outdoor Electrical NEMA 14-50R Receptacle Panel, ETL Listed $27.99

RVGUARD 50 Amp 125/250 Volt RV/EV Power Outlet Box, Enclosed Lockable Weatherproof Outdoor Electrical NEMA 14-50R Receptacle Panel, ETL Listed
Sponsored
current price $27.99

RVGUARD 50 Amp 125/250 Volt RV/EV Power Outlet Box, Enclosed Lockable Weatherproof Outdoor Electrical NEMA 14-50R Receptacle Panel, ETL Listed

KYHSHJ Recessed Flat Hidden Socket Kit with 2 * 20A Receptacle，4.8A 1 USB-A Ports &1 USB-C Port+3-Port RJ45 Datacom Receptacle. Internal Height Adjustable，Corrosive Resistant Hardware,Black From $39.99

KYHSHJ Recessed Flat Hidden Socket Kit with 2 * 20A Receptacle，4.8A 1 USB-A Ports &1 USB-C Port+3-Port RJ45 Datacom Receptacle. Internal Height Adjustable，Corrosive Resistant Hardware,Black
Options
Sponsored
From$3999

KYHSHJ Recessed Flat Hidden Socket Kit with 2 * 20A Receptacle，4.8A 1 USB-A Ports &1 USB-C Port+3-Port RJ45 Datacom Receptacle. Internal Height Adjustable，Corrosive Resistant Hardware,Black

3 out of 5 Stars. 2 reviews
Save with
Walmart Plus

30A/50A Power Inlet Box for Generator, Journeyman-Pro ETL Listed, w/Waterproof Cover,L5-30P,TT-30P,L14-30P,SS-2-50P | 30 or 50 Amp 125/250V | for 3 or 4 Prong Extension Cord (TT-30P - Black) From $49.99

30A/50A Power Inlet Box for Generator, Journeyman-Pro ETL Listed, w/Waterproof Cover,L5-30P,TT-30P,L14-30P,SS-2-50P | 30 or 50 Amp 125/250V | for 3 or 4 Prong Extension Cord (TT-30P - Black)
Options
Sponsored
From$4999

30A/50A Power Inlet Box for Generator, Journeyman-Pro ETL Listed, w/Waterproof Cover,L5-30P,TT-30P,L14-30P,SS-2-50P | 30 or 50 Amp 125/250V | for 3 or 4 Prong Extension Cord (TT-30P - Black)

5 out of 5 Stars. 4 reviews
Save with
Walmart Plus

ENERLITES 975549-S-D Floor Box Kit, 2 Gang 20A Tamper / Weather Resistant Duplex Receptacle / Datacom Ports, UL Listed - Nickel Plated Brass From $89.99

ENERLITES 975549-S-D Floor Box Kit, 2 Gang 20A Tamper / Weather Resistant Duplex Receptacle / Datacom Ports, UL Listed - Nickel Plated Brass
Options
Sponsored
From$8999

ENERLITES 975549-S-D Floor Box Kit, 2 Gang 20A Tamper / Weather Resistant Duplex Receptacle / Datacom Ports, UL Listed - Nickel Plated Brass

Save with
Walmart Plus

1 Box 20Pcs Electrical Box Knockout Plugs Bulk Silver Metal Stainless Steel Removable Flat Round Instant Panel Knockouts Seal Plug for Conduit Closure Unused Electric Box Outlets Silver 1set $14.65

1 Box 20Pcs Electrical Box Knockout Plugs Bulk Silver Metal Stainless Steel Removable Flat Round Instant Panel Knockouts Seal Plug for Conduit Closure Unused Electric Box Outlets Silver 1set
current price $14.65

1 Box 20Pcs Electrical Box Knockout Plugs Bulk Silver Metal Stainless Steel Removable Flat Round Instant Panel Knockouts Seal Plug for Conduit Closure Unused Electric Box Outlets Silver 1set

RENACLIPY 10Pcs Stainless Steel Electrical Box Knockout Plugs Durable Round Seals for Electrical Panel Protection $10.19

RENACLIPY 10Pcs Stainless Steel Electrical Box Knockout Plugs Durable Round Seals for Electrical Panel Protection
current price $10.19

RENACLIPY 10Pcs Stainless Steel Electrical Box Knockout Plugs Durable Round Seals for Electrical Panel Protection

RACO 8190 Outlet Box Knockout Cable Entry 16-Knockout Steel $6.99

RACO 8190 Outlet Box Knockout Cable Entry 16-Knockout Steel
current price $6.99

RACO 8190 Outlet Box Knockout Cable Entry 16-Knockout Steel

Hubbell Handy Box Knockout Combo - Steel, Rectangle, 1 Gang, Silver $8.22

Hubbell Handy Box Knockout Combo - Steel, Rectangle, 1 Gang, Silver
current price $8.22

Hubbell Handy Box Knockout Combo - Steel, Rectangle, 1 Gang, Silver

Manufacturer Varies Knockout Plug, Nylon, Locking Box Type 1EMR5 $16.17

Manufacturer Varies Knockout Plug, Nylon, Locking Box Type 1EMR5
current price $16.17

Manufacturer Varies Knockout Plug, Nylon, Locking Box Type 1EMR5

RACO Electrical Box Handy Knockout - 1/2 & 3/4 Knockouts Multicolor $24.01

RACO Electrical Box Handy Knockout - 1/2 & 3/4 Knockouts Multicolor
current price $24.01

RACO Electrical Box Handy Knockout - 1/2 & 3/4 Knockouts Multicolor

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, Fur Pak) $35.15

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, Fur Pak)
current price $35.15

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, Fur Pak)

Hubbell Handy Box Single Gang Four 3/4 In. Knockouts 1-7/8 In. Deep $18.71

Hubbell Handy Box Single Gang Four 3/4 In. Knockouts 1-7/8 In. Deep
current price $18.71

Hubbell Handy Box Single Gang Four 3/4 In. Knockouts 1-7/8 In. Deep

1 Box 20Pcs Electrical Box Knockout Plugs Bulk Silver Metal Stainless Steel Removable Flat Round Instant Panel Knockouts Seal Plug for Conduit Closure Unused Electric Box Outlets $18.31

1 Box 20Pcs Electrical Box Knockout Plugs Bulk Silver Metal Stainless Steel Removable Flat Round Instant Panel Knockouts Seal Plug for Conduit Closure Unused Electric Box Outlets
current price $18.31

1 Box 20Pcs Electrical Box Knockout Plugs Bulk Silver Metal Stainless Steel Removable Flat Round Instant Panel Knockouts Seal Plug for Conduit Closure Unused Electric Box Outlets

Thomas & Betts Handy Box Electrical Boxes Knockout Wire Holder - 10-Knockout - 2-1/8 x 4 x 2-1/8 In. $23.62

Thomas & Betts Handy Box Electrical Boxes Knockout Wire Holder - 10-Knockout - 2-1/8 x 4 x 2-1/8 In.
current price $23.62

Thomas & Betts Handy Box Electrical Boxes Knockout Wire Holder - 10-Knockout - 2-1/8 x 4 x 2-1/8 In.

Thomas & Betts-carlon 2Gang Knockout Box - .5 In. $31.88

Thomas & Betts-carlon 2Gang Knockout Box - .5 In.
current price $31.88

Thomas & Betts-carlon 2Gang Knockout Box - .5 In.

Southwire Handy Box Electrical Boxes Knockout - Plastic - 1 Piece $14.57

Southwire Handy Box Electrical Boxes Knockout - Plastic - 1 Piece
current price $14.57

Southwire Handy Box Electrical Boxes Knockout - Plastic - 1 Piece

RACO 1-1/2 Inch Deep Electrical Box - Side Knockouts - 25 Pack, 1/2 & 3/4 Inch $66.60

RACO 1-1/2 Inch Deep Electrical Box - Side Knockouts - 25 Pack, 1/2 & 3/4 Inch
current price $66.60

RACO 1-1/2 Inch Deep Electrical Box - Side Knockouts - 25 Pack, 1/2 & 3/4 Inch

Hubbell 666 Knockout Combo Handy Box $8.22

Hubbell 666 Knockout Combo Handy Box
current price $8.22

Hubbell 666 Knockout Combo Handy Box

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, hr Pck) $19.95

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, hr Pck)
current price $19.95

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, hr Pck)

Raco Electrical Box,Handy,1/2 in. Knockout 681 $16.15

Raco Electrical Box,Handy,1/2 in. Knockout 681
current price $16.15

Raco Electrical Box,Handy,1/2 in. Knockout 681

Thomas & Betts 1451 Knockout Plug $5.00

Thomas & Betts 1451 Knockout Plug
current price $5.00

Thomas & Betts 1451 Knockout Plug

RACO 4" Square Electrical Box With 12 Side & 5 Bottom Knockouts - Electrical Knockout $9.12

RACO 4" Square Electrical Box With 12 Side & 5 Bottom Knockouts - Electrical Knockout
current price $9.12

RACO 4" Square Electrical Box With 12 Side & 5 Bottom Knockouts - Electrical Knockout

(4 Pack) 4'' Square Electrical Box, Knockouts, Welded Construction, apacity, Raised Ground, Combination Screw Heads, Galvanized Steel $33.00

(4 Pack) 4'' Square Electrical Box, Knockouts, Welded Construction, apacity, Raised Ground, Combination Screw Heads, Galvanized Steel
current price $33.00

(4 Pack) 4'' Square Electrical Box, Knockouts, Welded Construction, apacity, Raised Ground, Combination Screw Heads, Galvanized Steel

Reduced price Weatherproof Outlet Box Metal Outdoor Electrical Box, Waterproof Die-Cast Metal, Threaded Knockouts, Gray Finish, UL Listed for Outdoor Receptacles 1-Gang, 3/4 Inch $9.89 Was $10.99

Weatherproof Outlet Box Metal Outdoor Electrical Box, Waterproof Die-Cast Metal, Threaded Knockouts, Gray Finish, UL Listed for Outdoor Receptacles 1-Gang, 3/4 Inch
current price Now $9.89, Was $10.99

Weatherproof Outlet Box Metal Outdoor Electrical Box, Waterproof Die-Cast Metal, Threaded Knockouts, Gray Finish, UL Listed for Outdoor Receptacles 1-Gang, 3/4 Inch

Square Box with Off-Center Knockouts - Pack of 4 $43.87

Square Box with Off-Center Knockouts - Pack of 4
current price $43.87

Square Box with Off-Center Knockouts - Pack of 4

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, Sngl pk) $16.07

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, Sngl pk)
current price $16.07

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, Sngl pk)

Uxcell 16Pack 1-1/2" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White From $7.69

Uxcell 16Pack 1-1/2" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White
Black, variant on Uxcell 16Pack 1-1/2" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White
White, variant on Uxcell 16Pack 1-1/2" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White
Options
From$769

Uxcell 16Pack 1-1/2" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White

Uxcell 66Pack 7/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, Black From $7.39

Uxcell 66Pack 7/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, Black
Black, variant on Uxcell 66Pack 7/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, Black
Gray, variant on Uxcell 66Pack 7/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, Black
White, variant on Uxcell 66Pack 7/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, Black
Options
From$739

Uxcell 66Pack 7/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, Black

5 out of 5 Stars. 1 reviews

Hubbell 241 Square Box 4", 2-1/8"D, 1/2" & 3/4" Side Knockouts, Mc/Bx Clamps $18.16

Hubbell 241 Square Box 4", 2-1/8"D, 1/2" & 3/4" Side Knockouts, Mc/Bx Clamps
current price $18.16

Hubbell 241 Square Box 4", 2-1/8"D, 1/2" & 3/4" Side Knockouts, Mc/Bx Clamps

Steel City Xc221-1 Knockout Box Connector 1/2" X 1/2", Die Cast Zinc $7.31

Steel City Xc221-1 Knockout Box Connector 1/2" X 1/2", Die Cast Zinc
current price $7.31

Steel City Xc221-1 Knockout Box Connector 1/2" X 1/2", Die Cast Zinc

Uxcell 4Pack 2-11/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White $9.59

Uxcell 4Pack 2-11/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White
current price $9.59

Uxcell 4Pack 2-11/32" Plastic Hole Plugs Panel Flush Type Knockout Locking Plugs, White

Raco Knockout Plug,Conduit Size 1/2" 1042 $8.64

Raco Knockout Plug,Conduit Size 1/2" 1042
current price $8.64

Raco Knockout Plug,Conduit Size 1/2" 1042

Square Box with Off-Center Knockouts - Pack of 2 $27.50

Square Box with Off-Center Knockouts - Pack of 2
current price $27.50

Square Box with Off-Center Knockouts - Pack of 2

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, wo ack) $21.21

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, wo ack)
current price $21.21

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (1, wo ack)

Top Secret 1 1/2" Domed Plugs 1.5"Plastic Knockout Plug, 1-1/2-Inch, Black For use In sheet metal or similar up to .125"or 3.18mm Thick From $14.99

Top Secret 1 1/2" Domed Plugs 1.5"Plastic Knockout Plug, 1-1/2-Inch, Black For use In sheet metal or similar up to .125"or 3.18mm Thick
Available in additional 5 options
Options
From$1499

Top Secret 1 1/2" Domed Plugs 1.5"Plastic Knockout Plug, 1-1/2-Inch, Black For use In sheet metal or similar up to .125"or 3.18mm Thick

Hubbell Raco 665 1-7/8-Inch Deep, 1/2-Inch End Knockouts 4-Inch by 2-Inch Handy Box Extension by HubbellRaco $10.76

Hubbell Raco 665 1-7/8-Inch Deep, 1/2-Inch End Knockouts 4-Inch by 2-Inch Handy Box Extension by HubbellRaco
current price $10.76

Hubbell Raco 665 1-7/8-Inch Deep, 1/2-Inch End Knockouts 4-Inch by 2-Inch Handy Box Extension by HubbellRaco

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (Fur Pak) $22.72

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (Fur Pak)
current price $22.72

Hubbell-Raco 8232 2-1/8-Inch Deep, 1/2-Inch and 3/4-Inch Side Knockouts, Welded 4-Inch Square Box (Fur Pak)

Other options to consider

View all

Popular in Box Knockout Plug

Related Products