Door Bottom / Sweep for wood, metal and fiberglass entry doors.
This door bottom has 2 barbs that fit into two kerfs on the bottom of door.
Snap in
Length: 35-3/4 inches - May Cut to length for smaller doors
Width: 1-5/8 inches - Fits 1-3/4 inch thick door
Kerfs: 7/8 inch center; between kerfs.
Cut Back: 3/4 inch
Style: Two Bulbs and one Fin
Height: 7/16 inch ( .440 inches )
Note: Taller Bulb than the 840028
Colors: Brown

Resources:
Video: How to Replace Snap-In Door Bottoms
Guide to Replacing Door Sweeps/Bottoms
Video: How to Replace Door Sweeps