Door Bottom / Sweep - 2 Barbs @ 7/8 inch - BrownDoor Bottom / Sweep
Snap In
Used on New Style Castlegate Doors with 13/16 inch spacing between barbs.
Comes in 35-3/4 inch Length,
Height: Fills gap that is 7/16 inch

The Original Castlegate was 3/4 inch, then 13/16 inch and currently 7/8 inch to center (kerf spacing)
SPECIAL NOTE: The 13/16 inch is no longer available. If you have the 13/16 barb spacing, we suggest using the 7/8 with or without 1 of the 2 barbs. You can remove the inside barb with a razor knife and use a couple to tacks to secure the sweep.

Old Style 840014 - 2 bulbs and 1 fin in center
Can also be replaced with the 4 fin type door bottom sweep # 840030

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