Seals against air, dust and water. Most effective when mounted on exterior of outswinging door. Supplied with screws for easy installation. Pemko door bottom sweeps are design to create a weatherproof seal at the bottom of your door. Bottom Sweep with vinyl can be used on wood and metal doors. Slotted holes for easy adjustment. Color: Aluminum Length: 42 in Installation Instructions 1. Measure, mark and trim door bottom sweep to full width of door. Trim seal to 1/16" longer than the trimmed housing (profile) on each end. 2. Close door and position door bottom sweep along outside bottom edge of door so that it makes light even contact with threshold. Mark door in center of slotted holes. 3. Drill pilot holes in door at marks. 4. Secure door bottom sweep to door with supplied screws. Adjust to ensure light even contact with threshold. NOTE: Not Recommended for inswing doors.