Product details:

The door-mounted dog door gives your dogs the ability to come and go as they please while keeping your home comfortable and draft-free.ENERGY EFFICIENTThe dog door was designed from the ground up with energy efficiency in mind. The unique 2-in-1 DoubleMag flap system gives a complete face-to-face magnet seal around the entire perimeter for the pet door. These aren't a couple of flimsy magnets struggling to hold a flap in place like most other dog doors, this is a truly airtight seal - independently tested and verified to be seal 15X better than the requirements for an Energy Star human door. The frame is made from rugged and insulating cellular PVC, which has 3000X more R-factor than the aluminum used in the frames of other so-called rough weatherdog doors.MADE TO LAST dog doors are built with pride in Michigan, USA from high-end materials and are meant to last for the long haul. The combination of the elements and constant use by dogs (especially big ones) puts a dog door's construction to the test. The line of pet doors has been meticulously engineered for long-term function and performance, using premium materials like marine-grade canvas, cellular PVC, industrial TPO, and commercial-grade SBR.