Ideal Pet Products Sash Chubby Kat Medium Pet Door, 27 to 32-Inch
High quality white finish aluminum construction
Installs easily into most styles of aluminum sash windows - not intended for vinyl windows
Adjustable width from: 27-inch to 32-inch (27)
Flap size 7-1/2-inch x 10-1/2-inch
Size :Adjustable Width 27" to 32"
Specially designed for sash windows and comes with a spring loaded locking slide and clear vinyl flap on standard plastic pet door models or a 4-way lock and unbreakable lexan flap on cat flap and chubbykat door models