M-D Building Products 49010 $14.25 Premium Aluminum Flat Top Threshold, 36" L x 1-3/4" W x 1/8" H, Satin Nickel 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