The M-D Garage Door Bottom seals up to a 3/4-in gap. It stays flexible in extreme temperatures down to minus 50°. The product has superior tear-resistance.. Builders Hardware Product Type: Garage Door Hardware. Finish: Black. Package Quantity: 1. Returnable: 90-Day. Product Depth (in.): 216 in. Product Height (in.): .25 in. Product Width (in.): 2.5 in. Builders Hardware Product Type: Garage Door Hardware. Package Quantity: 1