Real users said, "I have to admit, I was skeptical at first: no way to keep the 114° heat our of where I live, the Mojave desert. But I was oh-so-wrong!

Extreme Weather Petsafe Pet Doors Feature:
• New 3-flap system offers best protection from heat and cold, drafts, insects, or driving rain.
• Added insulation with snap-in weather shield (included)
• Fits standard doors from 1.5" to 2" thick
• Easy, do-it-yourself kit comes complete with instructions
• Lifetime Limited Warranty
• Durable plastic frame
• Replacement doors available. Order only as many flaps as you need. No need to order both if not necessary.

Replacement Flap Dimensions:
• Small: 5.5"W x 10.9"H
• Medium:8.5"W x 14.9"H
• Large: 10.5"W x 18.9"H