About Us    New Product Ideas    Custom Mfg.    Contact	847-455-0188
4" Square Conduit Boxes 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   Anchor Kits   Beam Clamps   Conduit Edge Clamps   Conduit Hangers   Electrical Trade Washers Knockout Seal   Knockout Seal (Plenum)   Knockout Seal (Snap-In)   Nail Straps   One Hole Straps   One-Piece Strut Clamps   Parallel Conduit Clamps   Pencil Rod   Reducing Washers   Right Angle Conduit Clamps   Safety "Nailer" Plates   Square Strut Washers   Two Hole Straps   V-Bracket Hanger 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   Fasteners, Hangers & Clamps : Knockout Seal     PAGES: 1 | 2 13 Style(s) Available  3" Knockout Seal Size: 3” Standard Pkg. Qty: 10 ct. Call 847-455-0188 for volume discount on case quantities. 3-1/2" Knockout Seal Size: 3-1/2” Standard Pkg. Qty: 10 ct. Call 847-455-0188 for volume discount on case quantities. 4" Knockout Seal Size: 4” Standard Pkg. Qty: 10 ct. Call 847-455-0188 for volume discount on case quantities. 4-1/2" Knockout Seal Size: 4-1/2” Standard Pkg. Qty: 10 ct. Call 847-455-0188 for volume discount on case quantities. 5" Knockout Seal Size: 5” Standard Pkg. Qty: 10 ct. Call 847-455-0188 for volume discount on case quantities. 6" Knockout Seal Size: 6” Standard Pkg. Qty: 10 ct. Call 847-455-0188 for volume discount on case quantities.   PAGES: 1 | 2 13 Style(s) Available