https://www.extremedogfence.com/product-category/pet-door-series/replacement-flap/

Saurabh04 Apr, 2024Business

Flap made from polyolefin-based polymer which is no-toxic, recyclable, and remains flexible in extreme cold! Magnetic strips along the sides create a maximum seal. Tested in 50 mph winds! Flexible & Safe. Dual pane design insulates like double pane glass. Magnets seal at the bottom of the flap floating threshold.