Endura Flap Thermo Sash 3e™ Pet Door for Sash Windows


Availability: Out of stock

Regular Price: $470.00

Our Price $389.00

Endura Flap

The Endura Flap Thermo Sash 3e installs, without the use of tools, into the track of your sash window.  It features a beefy aluminum frame, LoE dual-pane glass and the energy efficient Endura Flap Pet Door.   The Endura Flap Pet Door is manufactured to be flexible, safe, and energy efficient in all climates. The transparent, dual-pane flap seals tightly against the outside weather using a patented system of magnets. When closed, the flaps significantly reduce air conditioning and heat loss. There are up to seven width adjustment ranges, each with a three inch adjustment range, to fit a variety of sash windows (be sure to measure from the furthest points left and right to get an accurate measurement).  Opening height is another important measurement to ensure your window fits:  Small flap requires 18.5" clearance, Medium flap requires 22.5" clearance, Large flap requires 26.5" clearance and Extra Large requires 30.5" clearance.  All doors come with locking cover and installation instructions.  Tools are not required for installation!

Flap SizeFlap DimensionHeight To Raise WindowStock No
Small 6" x 11" 18 1/2" 07PPC06
Medium 8" x 15" 22 1/2" 07PPC08
Large 10" x 19" 26 1/2" 07PPC10
Extra Large 12" x 23" 30 1/2" 07PPC12
  • 22"-25"   
  • 25"-28"
  • 28"-31"
  • 31"-34"
  • 34"-37"
  • 37"-40"
  • 40"-43"
Important Note

All Extra Large and 22"-25" adjustment range sales are final, no return.
Please simulate the opening (open the window, use duct tape
to simulate the opening) to be sure this size is appropriate before ordering.

Our normal 90 day return policy applies to Small, Medium
and Large sizes as well as all other adjustment ranges.


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