Ideal "Cat Sash" Cat Doors for Sash Windows

Sash window cat door for tracks at least 7/8" wide Two flap sizes made of clear, Lexan polycarbonate with a magnet to stay closed Features a 4-way locking system for more control over your pet's access Five frame width ranges ("custom" sizes are non-returnable) Tool-free installation Comes in white only The Ideal Cat Sash Cat Door for Sash Windows is an economical small cat door solution for giving your kitties access to and from the house without your constant assistance. Not only does this give you and your cat more freedom, but it also reduces energy loss and prevents bugs from entering. You'll no longer have to keep a door/window open to accommodate them. The clear Lexan polycarbonate allows for a built-in four-way locking system.  This cat door window insert from Ideal Pet Doors comes in two sizes to ensure that cats of all sizes can use it. Features: The spring-loaded, adjustable design comes in five adjustment ranges for multiple window sizes:  23-28" custom, 27-32" custo