M-D Building Products 43816 M-D Dual L-Shape Door Bottom, 1-3/4 in W X 36 in L, quot, White Fits 1-3/4-Inch thick by 36-Inch wide doors Seals up to 7/16-Inch gap between bottom of door and threshold Durable white vinyl construction Vinyl seal provides All-season protection against drafts, moisture, dust and insects Slotted screw holes for easy adjustment