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4" Square Conduit Boxes 4-11/16" Conduit Boxes   4-11/16" Boxes & Extension Rings 1-1/2" Deep   4-11/16" Extension Rings 2-1/8" Deep 4-11/16" Industrial Garvin Covers   4-11/16" Square Box Covers   4-11/16" Square Bracket Boxes Welded 2-1/8" Deep   4-11/16" Square Drawn Boxes 2-1/8" Deep   4-11/16" Square Mud Rings 1 Gang   4-11/16" Square Mud Rings 2 Gang   4-11/16" Square Tile Covers 1 Gang   4-11/16" Square Tile Covers 2 Gang   4-11/16" Square Welded Boxes 2-1/8" Deep   4-11/16" Swivel Fixture Hanger 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   4-11/16" Conduit Boxes: 4-11/16" Industrial Garvin Covers 4-11/16" Square Garvin Cover 1 Gang 30-50-60 AMP RECEPTACLE 4-11/16" Square Garvin Cover 1 Gang 30-50-60 AMP RECEPTACLE. Also known as “crushed corner covers” & “industrial covers”, industrial Garvin Covers are used to brace switches, devices & receptacles w/out support from the rest of the electrical box. Originally developed in the mid-1900’s, Garvin Covers are raised 1/2” & are powder coated gray. Cover Size: 4-11/16” Raised: 1/2” Style: 30-50-60 Amp. Receptacle, 2.437” Diameter Cubic Inches: 7.3” Material: Steel 72C50 Call 847-455-0188 for details on volume discounts.