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Home > Cat & Dog Products > Dog Doors - Cat Doors > Shop by Brand > Patio Pacific Endura Flap Pet Doors > Thermo Panel IIIe - Patio Panel Pet Door Inserts

Thermo Panel IIIe - Extra Large - 12 x 23 Endura Flap

Thermo Panel IIIe - Extra Large - 12 x 23 Endura Flap

The Extra Large Endura Flap on this Patio Pacific Thermo Panel IIIe #12 is backed with a 15-year warranty (except damage from chewing). The Endura Flap is the best pet door flap ever made - bar none!

The superior flap on these 12 x 23 pet doors for sliding glass doors is not only nearly indestructible, but it seals tight and won't blow open in high winds. Adding to the energy-efficient design of the patio pet doors is dual-pane insulated glass. The interior pane has a low-e glass coating that also increases energy efficiency.

Extra Large Thermo Panel IIIe #12 - Dimensions:

Endura Flap Size: 12" x 23" pet door (w x h)

Rise Adjustment Range: 3" - 7" Rise (ships at 5")

  • The "rise" is the portion of the pet door that your pet must step over to go through the pet door. We suggest that 'flap height' plus 'rise' should about equal pet shoulder height.

Overall Panel Width: 17 1/4"

Available panel heights:

  • *Custom short panel - under 74 inches

  • Adjustable 74 3/4" to 77 3/4"

  • Adjustable 77 1/4" to 80 1/4"

  • *Custom extra tall panel - 81" to 93"

  • Adjustable 93 1/4" to 96 1/4"

*NOTE: Custom short or custom extra tall panels require 3-4 weeks for construction before shipping. Custom panels cannot be returned so please measure carefully; defective items may be exchanged.

Patio Pacific Thermo Panel IIIe #12 X-Large Features:

  • Extreme Performance Endura flap - The best pet door flap ever made. Tired of replacing worn out, leaking flaps? You owe it to yourself to investigate the Endura Flap.

Extreme Performance Endura Flap

  • Patented, exclusive 'User Adjustable Rise' - Lets the user easily adjust the height of the flap above the base of the pet door to fit taller or shorter dogs (see graphic). This greatly increases the flexibility of the pet door for the future.

    User Adjustable Rise

  • 'High Aspect Ratio' design: Much easier to fit your pet. Improves security for medium to large sized pets. Easier to share with a smaller pet.

  • User-adjustable magnet strength: The magnets in the Endura flap are super strong to provide a tight seal. These magnets have been designed to be removable for training purposes and can easily be re-installed after training.

  • 'Green' flap material: Safe for the environment.

  • Low E, dual-pane, insulated glass: Complements the insulating properties of the Endura flap.

  • 'No Tools' Installation means there is no need to drill holes in your sliding glass door frame.

  • Security Cover - Locks pets in or out. Easy to use clip lock is better than the old spring-loaded pin locks.

  • This patio pet door panel has a 'Spring load' design so it can be installed and removed in seconds.

  • Built in 'Anti-Whoops' allows for 3/4" change in adjustment range to accommodate measuring errors.

  • This product comes complete with one Draft Stopper. If you like, a second draft stopper can be purchased when you place your order.

  • Optional adjustable security Charley Bar (additional charge) better secures your sliding glass door. Adjustable from 28" to 48" and in your choice of white or satin color. The Charley Bar installs behind the sliding glass door and locks the slider against the pet door creating a better seal vs. a normal pin lock because it puts pressure on the back of the patio door making it close tighter. (Sliding door must be on the inside track in order for the Charley Bar to work).

  • 100% Designed and Manufactured in the USA

When you order a custom height panel you provide us with your track height measurement in the shopping cart section. We will design a panel especially for you with a height adjustment range of 3" that has your measurement approximately in the center of that range.

Custom orders cannot be resold. Therefore, they must be a final sale once built. Note that the insulated glass units for custom height orders take about two weeks for delivery from the tempering plant and that we need about one more week to schedule the assembly after the glass unit arrives.
Hot Tip: It is common for people to over-estimate the width of the flap needed by their dog. To avoid this problem, call the dog through a doorway opened only enough for him to comfortably pass. Then measure the gap. That measurement is a good width for a pet flap for your dog.

Dog Fancy Award

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Item #: 01PPC12

Availability: In Stock. Usually Ships in 1 - 2 Business Days!

MSRP: $690.00

Your Price:

Price Protection Plan

Item Options
IMPORTANT: Enter the exact height of your sliding doors here:

Choose Color:
Bronze (Dark Brown Brushed Finish)
Satin (Brushed Aluminum Finish)
White (Gloss Finish)

Select Your Sliding Door Height Range:
Custom under 74" (An additional $70.00)
74 3/4" to 77 3/4"
77 1/4" to 80 1/4"
Custom 81" to 93" (An additional $220.00)
93 1/4" to 96 1/4" (An additional $140.00)

Additional Draft Stopper Option:
Yes. Please add an additional draft stopper for sliding glass doors up to maximum 81" in height. (An additional $29.99)
Yes. Please add an additional draft stopper for sliding glass doors up to maximum 96" in height. (An additional $30.99)

Add Optional Security Charley Bar (compresses to 28" and extends to 48"):
Yes. Please add the WHITE COLOR Charley Bar in to my order. (An additional $34.99)
Yes. Please add the SATIN COLOR Charley Bar in to my order. (An additional $34.99)

Your Price:

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