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Home / Thermo Sash 3e Pet Door for Sash Windows

Endura Flap Thermo Sash 3e white-frame pet and cat door sized to drop into an existing sash window

Endura Flap Pet Doors

Thermo Sash 3e Pet Door for Sash Windows

★★★★★4.8 (139)$579.99

Insulated, weather-resistant pet door insert for sash windows, allowing pets to enter and exit freely while maintaining home insulation.

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PetAdoro is reader-supported. We may earn a commission when you buy through links on this site, at no extra cost to you. We only feature pet gear we'd give our own pets.

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Endura Flap Pet Doors

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Highlights

Combines a flexible, insulated polyolefin flap with a heavy-duty aluminum frame for secure, energy-efficient pet access in sash windows without permanent installation.