The PetSafe Wall Entry Extension Tunnel is designed for walls greater than 7 1/four” thick. Small wall entry doors will also be extended as much as 10 3/four” thick, even as medium and massive will also be extended as much as 12″.
Compatible with the next PetSafe Pet Doors: Plastic Wall Entry Door (type # ZPA00-16203) ; Aluminum Wall Entry Door (type # PPA11-10917)
Extends Wall Entry Doors from 7 1/four in to 12 in thick
Tunnel will also be cut shorter to deal with walls 7 1/four in to 8 1/four in thick
Package dimensions: 33.07 in L X 6.57 in W X 1.81 in H