Amazon
Maximum energy efficiency Inner telescoping frame that adapts to doors of 1" to 1 3/4" thickness Spring loaded locking slide for one-handed use Flap Sizes: Medium – 6 5/8" x 11 1/4"
Maximum energy efficiency Inner telescoping frame that adapts to doors of 1" to 1 3/4" thickness Spring loaded locking slide for one-handed use Flap Sizes: Medium – 6 5/8" x 11 1/4"