Metallics 400KOS 3-Piece Knock Out Seal With Knockouts, For Use With Panel Box, 4 in Trade, Steel, Silver

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.