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4" Square Conduit Boxes   4" Square Boxes 1-1/2" Deep   4" Square Boxes 1-1/4" Deep 4" Square Boxes 2-1/8" Deep   4" Square Boxes 3-1/2" Deep   4" Square Bracket Boxes 1-1/2" Deep   4" Square Bracket Boxes 2-1/8" Deep   4" Square Extension Rings 1-1/2" Deep   4" Square Extension Rings 2-1/8" Deep   4" Square Flat Covers   4" Square Garvin Covers   4" Square Mud Rings 1 Gang   4" Square Mud Rings 2 Gang   4" Square Offset Mud Ring   4" Square Tile Covers 1 Gang   4" Square Tile Covers 2 Gang   4" Square to Round Device Rings   4" Swivel & Kwik-Hang Fixture Covers   Wire Protector Pans 4-11/16" Conduit Boxes Conduit Body Electrical Boxes & Covers Handy Boxes Electrical Boxes & Covers Masonry Electrical Boxes & Covers Multi-Gang Electrical Boxes & Covers Octagon & Round Electrical Boxes & Covers Stainless Steel Electrical Boxes & Covers Switch Boxes Electrical Boxes Plastic Fasteners, Hangers & Clamps Fire Alarm / Emergency Boxes & Covers Fittings, Hubs & Bushings Fixture Whips & Grips GFCI--Ground Fault Circuit Interrupters Grounding Products Lighting & Lamps & CFL Bulbs Service Entrance Products Switches, Devices & Receptacles Tools & Install Accessories Wall Plates Weatherproof Boxes & Covers Aerial Drop Wire Hardware Beam Clamps Bridle Rings Bulk Wire & Cable Cable Management Distribution Rings Fire Prevention Products J-Hooks Jacks, Face Plates & Bezels Patch Cables Rope, Twine & Pulling Tape   4" Square Conduit Boxes: 4" Square Boxes 2-1/8" Deep 4” Square Welded Electrical Box 2-1/8" Deep 1/2" KO's 4” Square Welded Electrical Box 2-1/8" Deep 1/2" KO's is installed in walls and ceilings for switches, devices and light fixtures. Square electrical boxes are used to run multiple conductors in two or more directions to bring power to multiple electrical devices. Type: Welded Knockout Sides: (12) 1/2” Knockout Bottom: (5) 1/2” Cubic Inches: 30.3" Material: Steel 52171-1/2 Call 847-455-0188 for details on volume discounts.