Extruded Aluminum Rain Drip and Vinyl Door Sweep Fills from 1/2" (12.7 mm) to 1" (25.44 mm) Most effective when mounted on exterior of outswinging door. Supplied with screws for easy installation Slotted holes for adjustment. The Door Sweep Combination has a "rain drip" feature which keeps heavy rain away from the base of the door, as well as preventing dust, moisture and wind from entering between the base of the door and the threshold. Color: Aluminum Length: 48 in Installation Instructions 1. For outswinging doors, measure, mark and trim rain drip to full width of door. For inswinging doors, trim to clear door stops. 2. Close door and position rain drop along outside bottom edge of door. Be certain rain drip clears threshold (or floor). Mark door in center of slotted holes. 3. Drill pilot holes in door at marks. 4. Secure rain drip to door with supplied screws.