M-D Building Products 11056 M-D Flat Top Saddle Threshold, 1-3/4 in W X 36 in L X 1/8 in H, 1-3/4", Aluminum 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 1/8 inch high 1-3/4-inches wide by 1/8-inch high by 36 inches long