X-Large, White, Pet Door, Durable & Paintable Plastic Frame, Includes Snap On Closing Panel, Fits Doors 1/16" To 2" Thick, Cut Out Size: 14-7/8"W x 26-1/2"H, Flap Opening Size: 13-5/8"W x 23-5/8"H, Great For Pets Up 12 - 220 LBS.