Shop 4 square extension box

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$7.29
Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$7.29
Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$2.59
Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$2.59
Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$4.79
Garvin Bex-475 4" Sq Box Extender 3/4" Raised
Gordon Electric Supply
$4.79
Garvin Bex-475 4" Sq Box Extender 3/4" Raised
Gordon Electric Supply
$5.69
Garvin Southwire 4 Square Extension Ring Converts One Gang To 4 Square 2-1/8 Inch Deep 1/2 And 3/4 Knockouts (53171-Sub)
Lite Store USA
$5.69
Garvin Southwire 4 Square Extension Ring Converts One Gang To 4 Square 2-1/8 Inch Deep 1/2 And 3/4 Knockouts (53171-Sub)
Lite Store USA
$13.59
Garvin 53171-Blnk 4" Sq Blank Extension Ring 2-1/8" Deep No Ko's
Gordon Electric Supply
$13.59
Garvin 53171-Blnk 4" Sq Blank Extension Ring 2-1/8" Deep No Ko's
Gordon Electric Supply
$13.59
Garvin 52181-Svt 4" Sq Chicago Plenum Air Tight Junction Box 3" Deep (8) 1/2" & (4) 3/4" Side Ko's
Gordon Electric Supply
$13.59
Garvin 52181-Svt 4" Sq Chicago Plenum Air Tight Junction Box 3" Deep (8) 1/2" & (4) 3/4" Side Ko's
Gordon Electric Supply
$4.79
Garvin 53171-S 4" Sq Extension Ring Welded 2-1/8" Deep W/(6) 1/2" & (6) Combo Ko's
Gordon Electric Supply
$4.79
Garvin 53171-S 4" Sq Extension Ring Welded 2-1/8" Deep W/(6) 1/2" & (6) Combo Ko's
Gordon Electric Supply
$6.49
Garvin 52171-Kor 4" Sq Junction Box For Corrugated Steel Walls 2-1/8" Deep Elevated Ko's (8) 1/2" & (4) Combo Side Kos
Gordon Electric Supply
$6.49
Garvin 52171-Kor 4" Sq Junction Box For Corrugated Steel Walls 2-1/8" Deep Elevated Ko's (8) 1/2" & (4) Combo Side Kos
Gordon Electric Supply
$6.09
Garvin Southwire 4 Square Extension Ring Drawn 2-1/8 Inch Deep With 1 Inch Knockouts (53171-1)
Lite Store USA
$6.09
Garvin Southwire 4 Square Extension Ring Drawn 2-1/8 Inch Deep With 1 Inch Knockouts (53171-1)
Lite Store USA
$4.39
Garvin Bex-450 4" Sq Box Extender 1/2" Raised
Gordon Electric Supply
$4.39
Garvin Bex-450 4" Sq Box Extender 1/2" Raised
Gordon Electric Supply
$88.56
Orbit 4Sdb-Mko-Ext 4" Square Box
Gordon Electric Supply
$88.56
Orbit 4Sdb-Mko-Ext 4" Square Box
Gordon Electric Supply
$11.69
Garvin 53151-Blnk 4" Sq Blank Extension Ring 1-1/2" Deep No Ko's
Gordon Electric Supply
$11.69
Garvin 53151-Blnk 4" Sq Blank Extension Ring 1-1/2" Deep No Ko's
Gordon Electric Supply
$6.49
Garvin 53171-3/4 4" Sq Extension Ring Drawn 2-1/8" Deep W/3/4" Ko's
Gordon Electric Supply
$6.49
Garvin 53171-3/4 4" Sq Extension Ring Drawn 2-1/8" Deep W/3/4" Ko's
Gordon Electric Supply
$6.99
Garvin 53141-1/2 4" Sq Extension Ring Welded 1-1/4" Deep W/1/2" Ko's
Gordon Electric Supply
$6.99
Garvin 53141-1/2 4" Sq Extension Ring Welded 1-1/4" Deep W/1/2" Ko's
Gordon Electric Supply
$412.50
Raco 203Pl 4" Square Plenum Box Extension 1-1/2" Deep
Gordon Electric Supply
$412.50
Raco 203Pl 4" Square Plenum Box Extension 1-1/2" Deep
Gordon Electric Supply
$68.59
Garvin 52171-Svtss Stainless Steel 4" Sq Air Tight Junction Box 2-1/8" Deep 1/2" & 3/4" Side Ko's
Gordon Electric Supply
$68.59
Garvin 52171-Svtss Stainless Steel 4" Sq Air Tight Junction Box 2-1/8" Deep 1/2" & 3/4" Side Ko's
Gordon Electric Supply
$61.59
Garvin 53151-Svtss Stainless Steel 4" Sq Extension Ring 1-1/2" Deep (8) 1/2" & (4) 3/4" Ko's
Gordon Electric Supply
$61.59
Garvin 53151-Svtss Stainless Steel 4" Sq Extension Ring 1-1/2" Deep (8) 1/2" & (4) 3/4" Ko's
Gordon Electric Supply
$8.39
Garvin Southwire 4 Inch Square Box Extender 1 Inch Rsd (Bex-4100)
Lite Store USA
$8.39
Garvin Southwire 4 Inch Square Box Extender 1 Inch Rsd (Bex-4100)
Lite Store USA
$102.00
Orbit 4Sb-50/75-Ext 4" Square Box 37257
Gordon Electric Supply
$102.00
Orbit 4Sb-50/75-Ext 4" Square Box 37257
Gordon Electric Supply
$2.88
Raco 201 4" Square 1-1/2D Extension 1/2" Ko
Gordon Electric Supply
$2.88
Raco 201 4" Square 1-1/2D Extension 1/2" Ko
Gordon Electric Supply
$16.89
Garvin 52181-Vtbar 4" Sq Junction Box W/Ceiling Grid Span Bar 3-1/2" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$16.89
Garvin 52181-Vtbar 4" Sq Junction Box W/Ceiling Grid Span Bar 3-1/2" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$13.19
Garvin 52191-3/4 4" Sq Junction Box 4" Deep (8) 3/4" Side Ko's
Gordon Electric Supply
$13.19
Garvin 52191-3/4 4" Sq Junction Box 4" Deep (8) 3/4" Side Ko's
Gordon Electric Supply
$11.29
Garvin 52181-Spkr 4" Sq Concrete Box W/Mounting Tabs 3-1/2" Deep (4) 1/2" & (4) 3/4" Side Ko's
Gordon Electric Supply
$11.29
Garvin 52181-Spkr 4" Sq Concrete Box W/Mounting Tabs 3-1/2" Deep (4) 1/2" & (4) 3/4" Side Ko's
Gordon Electric Supply
$484.50
Appleton 4Ssbespl 4 Square Outlet Box Ext Ring
Gordon Electric Supply
$484.50
Appleton 4Ssbespl 4 Square Outlet Box Ext Ring
Gordon Electric Supply
$6.58
4 in. 21 Cu. In. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)
Home Depot
22
Free shipping
$6.58
4 in. 21 Cu. In. Steel Pre-Galvanized Square Box Extension Ring (531511234UB-25R)
Home Depot
$23.82
531711234 Thomas & Betts Square Box Extension Ring - Volume 30.3 Cu In - 4 Inch Square X 2-1/8 Inch Deep - 1/2" & 3/4" Knockouts - Galvanized Steel
Onlinecomponents.com
2
$23.82
531711234 Thomas & Betts Square Box Extension Ring - Volume 30.3 Cu In - 4 Inch Square X 2-1/8 Inch Deep - 1/2" & 3/4" Knockouts - Galvanized Steel
Onlinecomponents.com
$4.99
Garvin 52171-Ab 4" Sq Junction Box 2-1/8" Deep W/Vertical Right Angle Bracket
Gordon Electric Supply
$4.99
Garvin 52171-Ab 4" Sq Junction Box 2-1/8" Deep W/Vertical Right Angle Bracket
Gordon Electric Supply
$145.50
Orbit 4Sb-50-Ext 4" Square Box 1-1/2" Deep
Gordon Electric Supply
$145.50
Orbit 4Sb-50-Ext 4" Square Box 1-1/2" Deep
Gordon Electric Supply
$295.00
Bowers 4-Sw-Ext-Spl 4" Square Extension Ring
Gordon Electric Supply
$295.00
Bowers 4-Sw-Ext-Spl 4" Square Extension Ring
Gordon Electric Supply
$142.50
Raco 202 4" Square 1-1/2D Extension 3/4" Ko
Gordon Electric Supply
$142.50
Raco 202 4" Square 1-1/2D Extension 3/4" Ko
Gordon Electric Supply
$5,481.00
Appleton 4Ssbesplrd 4 Square Outlet Box Ext Ring Red
Gordon Electric Supply
$5,481.00
Appleton 4Ssbesplrd 4 Square Outlet Box Ext Ring Red
Gordon Electric Supply
$5.99
Garvin 52171-Spt 4" Sq Junction Box 2-1/8" Deep W/Pre-Installed 8" Ground Wire (4) 1/2" & (6) Combo Side Ko's
Gordon Electric Supply
$5.99
Garvin 52171-Spt 4" Sq Junction Box 2-1/8" Deep W/Pre-Installed 8" Ground Wire (4) 1/2" & (6) Combo Side Ko's
Gordon Electric Supply
$2.69
Garvin 52171-Bx 4" Sq Junction Box 2-1/8" Deep W/(6) 1/2" And (4) Mc/Bx Connection Points
Gordon Electric Supply
$2.69
Garvin 52171-Bx 4" Sq Junction Box 2-1/8" Deep W/(6) 1/2" And (4) Mc/Bx Connection Points
Gordon Electric Supply
$72.09
Garvin Tbx-425 Masonry Box Extension Ring 4-Gang 2-1/2" Deep
Gordon Electric Supply
$72.09
Garvin Tbx-425 Masonry Box Extension Ring 4-Gang 2-1/2" Deep
Gordon Electric Supply
$7.09
Garvin Southwire 4 Square Blank Extension Ring 2-1/8 Inch Deep No Knockouts (53171-Blnk)
Lite Store USA
$7.09
Garvin Southwire 4 Square Blank Extension Ring 2-1/8 Inch Deep No Knockouts (53171-Blnk)
Lite Store USA
$2.79
Garvin 53151-Svt 4" Sq Chicago Plenum Extension Ring 1-1/2" Deep (8) 1/2" & (4) 3/4" Ko's
Gordon Electric Supply
$2.79
Garvin 53151-Svt 4" Sq Chicago Plenum Extension Ring 1-1/2" Deep (8) 1/2" & (4) 3/4" Ko's
Gordon Electric Supply
Electrical 101: How To Install A 4 Square Box Extension (Commercial)
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Shop 4 square extension box

Sponsored
About our ads
$7.29
Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$7.29
Garvin 53171-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 2-1/8" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$2.59
Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$2.59
Garvin 53151-Sub 4" Sq Extension Ring Converts 1-Gang To 4" Sq 1-1/2" Deep 1/2" & 3/4" Ko's
Gordon Electric Supply
$4.79
Garvin Bex-475 4" Sq Box Extender 3/4" Raised
Gordon Electric Supply
$4.79
Garvin Bex-475 4" Sq Box Extender 3/4" Raised
Gordon Electric Supply
$5.69
Garvin Southwire 4 Square Extension Ring Converts One Gang To 4 Square 2-1/8 Inch Deep 1/2 And 3/4 Knockouts (53171-Sub)
Lite Store USA
$5.69
Garvin Southwire 4 Square Extension Ring Converts One Gang To 4 Square 2-1/8 Inch Deep 1/2 And 3/4 Knockouts (53171-Sub)
Lite Store USA
$13.59
Garvin 53171-Blnk 4" Sq Blank Extension Ring 2-1/8" Deep No Ko's
Gordon Electric Supply
$13.59
Garvin 53171-Blnk 4" Sq Blank Extension Ring 2-1/8" Deep No Ko's
Gordon Electric Supply
$13.59
Garvin 52181-Svt 4" Sq Chicago Plenum Air Tight Junction Box 3" Deep (8) 1/2" & (4) 3/4" Side Ko's
Gordon Electric Supply
$13.59
Garvin 52181-Svt 4" Sq Chicago Plenum Air Tight Junction Box 3" Deep (8) 1/2" & (4) 3/4" Side Ko's
Gordon Electric Supply
$4.79
Garvin 53171-S 4" Sq Extension Ring Welded 2-1/8" Deep W/(6) 1/2" & (6) Combo Ko's
Gordon Electric Supply
$4.79
Garvin 53171-S 4" Sq Extension Ring Welded 2-1/8" Deep W/(6) 1/2" & (6) Combo Ko's
Gordon Electric Supply
$6.49
Garvin 52171-Kor 4" Sq Junction Box For Corrugated Steel Walls 2-1/8" Deep Elevated Ko's (8) 1/2" & (4) Combo Side Kos
Gordon Electric Supply
$6.49
Garvin 52171-Kor 4" Sq Junction Box For Corrugated Steel Walls 2-1/8" Deep Elevated Ko's (8) 1/2" & (4) Combo Side Kos
Gordon Electric Supply
$6.09
Garvin Southwire 4 Square Extension Ring Drawn 2-1/8 Inch Deep With 1 Inch Knockouts (53171-1)
Lite Store USA
$6.09
Garvin Southwire 4 Square Extension Ring Drawn 2-1/8 Inch Deep With 1 Inch Knockouts (53171-1)
Lite Store USA
$4.39
Garvin Bex-450 4" Sq Box Extender 1/2" Raised
Gordon Electric Supply
$4.39
Garvin Bex-450 4" Sq Box Extender 1/2" Raised
Gordon Electric Supply
$88.56
Orbit 4Sdb-Mko-Ext 4" Square Box
Gordon Electric Supply
$88.56
Orbit 4Sdb-Mko-Ext 4" Square Box
Gordon Electric Supply
$11.69
Garvin 53151-Blnk 4" Sq Blank Extension Ring 1-1/2" Deep No Ko's
Gordon Electric Supply
$11.69
Garvin 53151-Blnk 4" Sq Blank Extension Ring 1-1/2" Deep No Ko's
Gordon Electric Supply
$6.49
Garvin 53171-3/4 4" Sq Extension Ring Drawn 2-1/8" Deep W/3/4" Ko's
Gordon Electric Supply
$6.49
Garvin 53171-3/4 4" Sq Extension Ring Drawn 2-1/8" Deep W/3/4" Ko's
Gordon Electric Supply
$6.99
Garvin 53141-1/2 4" Sq Extension Ring Welded 1-1/4" Deep W/1/2" Ko's
Gordon Electric Supply
$6.99
Garvin 53141-1/2 4" Sq Extension Ring Welded 1-1/4" Deep W/1/2" Ko's
Gordon Electric Supply
$412.50
Raco 203Pl 4" Square Plenum Box Extension 1-1/2" Deep
Gordon Electric Supply
$412.50
Raco 203Pl 4" Square Plenum Box Extension 1-1/2" Deep
Gordon Electric Supply
$68.59
Garvin 52171-Svtss Stainless Steel 4" Sq Air Tight Junction Box 2-1/8" Deep 1/2" & 3/4" Side Ko's
Gordon Electric Supply
$68.59
Garvin 52171-Svtss Stainless Steel 4" Sq Air Tight Junction Box 2-1/8" Deep 1/2" & 3/4" Side Ko's
Gordon Electric Supply
$61.59
Garvin 53151-Svtss Stainless Steel 4" Sq Extension Ring 1-1/2" Deep (8) 1/2" & (4) 3/4" Ko's
Gordon Electric Supply
$61.59
Garvin 53151-Svtss Stainless Steel 4" Sq Extension Ring 1-1/2" Deep (8) 1/2" & (4) 3/4" Ko's
Gordon Electric Supply
$8.39
Garvin Southwire 4 Inch Square Box Extender 1 Inch Rsd (Bex-4100)
Lite Store USA
$8.39
Garvin Southwire 4 Inch Square Box Extender 1 Inch Rsd (Bex-4100)
Lite Store USA