M-D Building Products 9613 Flat Top Threshold, 36" L x 2-1/2" W x 1/4" H, Brite Gold All season protection against drafts, moisture, dust and insects Heavy duty aluminum for long lasting durability Multiple uses - threshold, floor trim and repair Seals gaps up to 1/4 inch high 2-1/2-inches wide by 1/4-inches high by 36 inches long