Thermo Sash 3e Cat Door for Sash Windows Pet Doors The telescoping aluminum tunnel is

The telescoping aluminum tunnel is a defining part of that experience

The extruded aluminum frame offers a clean

A single flap design gives many pets a more natural push through experience than heavier double flap systems

Weather stripping and a top loading locking cover are included to help reduce drafts and give you control when pets need to stay inside

Thermo Sash 3e Cat Door for Sash Windows Pet Doors The telescoping aluminum tunnel isThis insert is built specifically for vertical sliding windows, allowing you to add a pet door without cutting into walls or doors. It sits cleanly within the window track, preserving the look and function of your home. Quick Setup No CommitmentThe spring loaded design holds the panel in place using pressure within the track, so installation is fast and removal is just as easy. This makes it especially useful for renters or anyone who wants