We believe they are easier to use than the one-piece push-in seals. Many areas of the country are requiring a better Knock-Out Seal. Our Electrical Distributors have been asking us for this product in a smaller pack. Now we offer a smaller quantity Contractor Poly Bag.

Metallic's Knock Out Seal, 3-Piece, For Use With: Panel Box, 1/2 in Trade Size, Steel, Silver

• High quality safety products
• Quick method to seal-up knockouts
• Size is stamped on seal