The Liberty Cat Door for Sash Windows gives your cat independent outdoor access through a tool-free, non-permanent panel designed for vertical sash windows. Built with single-pane safety glass and durable frame options, it maintains home insulation and security without requiring permanent modifications.

Versatile Fit for Sash Windows
Designed to fit sash window openings from 20" to 44-1/2" wide, this insert features built-in spring-loaded adjustment for a draft-free seal. The non-permanent design makes it an ideal solution for both renters and homeowners.

Energy-Efficient Safety Glass
Constructed with durable single-pane safety glass, the insert preserves natural sunlight and clear outdoor views while protecting your home against outdoor drafts and weather extremes.

Tool-Free Installation
The spring-loaded mechanism snaps securely into place within your window track without tools, drilling, or hardware alterations, making installation and seasonal removal quick and simple.

Aluminum & Vinyl Frame Options
Select between heavy-duty extruded aluminum or flexible vinyl frames to match your existing window style. Aluminum models fit window tracks at least 1" wide, while vinyl models fit tracks at least 1-1/2" wide.

Secure Access Control
Includes a sturdy locking cover that slides into place over the flap, allowing you to easily manage pet access and keep your cat safely indoors when needed.