M-D 43820 Door Bottom, 35-3/16 in L, 1-3/4 in W, Vinyl | All season protection against drafts, moisture, dust and insects. With vinyl bulb and fins. Replaces many 1-3/4 in pre-hung style door bottoms. Inserts into slots in bottom of door to provide a weathertight seal. Seals gaps up to 1/2 in high.