BUILDER magazine's Jennifer Goodman reports that the Freedom Pet Pass is tight enough to meet California’s Title 24 energy-efficiency requirements. The door uses double-magnet seals to keep air out, and achieve an NFRC label air leakage rating of 0.03 cfm/sq. ft. (U-value 0.61).
The doors' airtight seal is strong enough to withstand windy weather, yet easy for even a small cat to open, thanks to a combination of proprietary magnet technologies and a unique double flap design. They are tested to withstand the equivalent of a 25 mph wind, yet let pets enter and exit with no effort by "unzipping” the seal when they want to enter or exit.
Both wall and door mount options available from $199 to $379 (price varies by size of door).