Ideal Ruff Weather Dog Door, Gray, X-Large, 5.75"L x 19.94"W x 21.62"H

Wall kit thickness range 4.75" -7.25" Door thickness range 0.75" -1.75" Cutout size 11.125" x 9.25" Flap size 9.75" x 17" The extra large pet door is a suitable fitting for furry friends that are between the sizes of 36 to 90 lbs