M-D Building Products 5991 05991 M-D 0 Dual U-Shape Door Bottom, 1-3/4 in W X 36 in L X 1-1/2 in H, Brown This item is a M-D Building Products 5991 U-Shaped Door Bottom with Vinyl Fins CDB 134, 36 Inches, Brown Purpose of use for Building Materials & Ladders, household-door-sills This product is manufactured in United States All season protection against drafts, moisture, dust and insects Multiple vinyl fins provide a weathertight seal Slotted screw holes for easy adjustment; seals gaps up to 7/16 inch high; fits 1-3/4" doors Fasteners included 1-1/2-inches high by 36 inches long