This door has the maximum energy efficiency that is 3.5 times higher than our single-flap pet doors. The 3-flap system offers protection from the elements. Fits doors 1 5/8 – 2 1/4 inches thick. Snap-on closing panel included; additional closing panel (sold separately) can be used for added insulation.
Amazon Price: $104.93 (as of August 15, 2018 9:52 am -