Small: 5-3/16" x 8-7/8"
Medium: 8-3/16" x 12-7/8"
Large: 10-3/16" x 16-15/16"
Extra Large: 13-3/4" x 23-3/8"

Replacement Flaps for The PetSafe Aluminum Freedom Dog Door, Plastic Pet Door
and the Extreme Weather Door

Small:
5-3/16" x 8-7/8"
Flap Dimensions: 5-1/8" x 7-5/8"

Medium:
8-3/16" x 12-7/8"
Flap Dimensions: 8-1/8" x 11-3/4"

Large:
10-1/8" x 15-3/4"

Extra Large:
13-3/4" x 24-3/8"
Flap Dimensions: 13-3/8" x 23"