K&H Pet Products Universal Mount Kitty Sill turns any window into the best seat in the house. Available in multiple styles: orthopedic, hooded, and scratcher ball track. The 3 EZ Mount suction cups easily attach this cozy cat perch to any window, no tools necessary. Fits window glass 17" wide and larger (total space width 24" required). The Universal Mount Kitty Sills have the same advanced engineering strength as our original Kitty Sill. Same great oval design and orthopedic foam and is also available in a hooded model. Designed by K&H with OVER 20 years of experience in creating safe, innovative, quality products for pets; includes a one-year limited warranty.