M-D Building Products 8102 M-D 0 Deluxe Heavy Duty Door Threshold with Vinyl Seal, 3-3/4 in W X 36 in L X 3/4 in H, Aluminum Finish Heavy Duty Aluminum & Vinyl Provides Long Lasting Seal & Durability All Season Protection Weathertight Seal 36" X 3-3/4" X 3/4"