Thermo Sash IIIe Sash Window Pet Door - Bronze (Dark Brown) Frame, Small Flap; 22"-25"W


If you have a sash window that slides up and down, you're in luck!  A sash window pet door is a quick and easy way to give your pet access without having to do an installation in a door or wall. The Patio Pacific Thermo Sash IIIe includes a dual-pane, insulated, low "e" glass plus the award winning and patented Endura flap.

Key Features: Exclusive Endura Flap. Dual-pane, insulated, low "e" glass -- the highest performing glass available. Spring load design can be installed in seconds. No tools needed. Exclusive Anti-Oops allows for 3/4" change in adjustment width range to allow for small measuring errors. Draft stopper to keep air from coming in between windows. Adjustment ranges accommodate windows 22"-43" wide in 3" increments (be sure your track is at least 1"). 100% designed, engineered, and manufactured in the USA. Colors are Bronze (dark brown), Satin Aluminum (silver), and White.

Key Points: Measure carefully. Raise the window and measure the full width into the track on both sides before choosing a size. Be sure window can be raised high enough to accept door. An overhand or lip above door will prevent locking cover insertion. Sash windows don't usually come with locks -- you can get locks at a hardware store to prevent window from being raised.

Installation Instructions.
Endura Flap Video
See "Specifications" tab below for all dimensions.

 Choose the right size door for your dog.

Ships from the manufacturer within 5 to 7 business days. Expedited shipping not available.
List Price $380.00
Your Price $359.00
You Save $21.00 - 6%
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  • Warranty: 10 year limited warranty for manufacturing defects
  • Restocking Fee: 20% of purchase price
  • Doorway (Flap) Dimensions:
      Small:  6"W x 11"H
      Medium:  8"W x 15"H
      Large:  10"W x 19"H
      XLarge:  12"W x 23"H
  • Returns: Please see Guarantee tab
  • Outer Dimensions:
      Small:  18 1/2"H
      Medium:  22 1/2"H
      Large:  26 1/2"H
      XLarge:  30 1/2"H
  • Material: Aluminum, Low "e" glass, Endura flap
  • Restocking Fee: 20% of purchase price
  • Returns: Please see Guarantee tab
  • Warranty: 10 year limited warranty for manufacturing defects
  • Item #: PATI-07PPC06-B-B
Patio Pacific Inc

was incorporated in 1976 specifically to market a new type of pet door--the 'panel' pet door for sliding glass door. This new product, the 'Instant' Pet Door, was the first of it's kind to offer an adjustable height capability which was desperately needed because sliding glass door tracks are not all the same height. It is a tribute to Lucile, founder of the company, that she had the vision to see a need in the market and the initiative to start a company from scratch to meet that need.

Over the years, the pet door has gone through many design improvements. And, In 2002, we began looking at the flap problem. Simply put, there wasn't a good flap on the market at the time. Either they were rigid, and therefore not safe enough, or they were flexible and safe but leaked badly, didn't insulate and eventually failed requiring the owner to buy another one and start the process over. I felt that there was a market for a really high quality, durable, safe flap that also sealed and insulated. With a designer's invaluable help, the 'Endura' flap was designed and built. It is, without doubt, the best pet door flap ever made and was the basis for a complete line including patio panels, door mounts and wall mounts by summer of 2005.

Best Price Guarantee
We offer a "Best Price Guarantee" on many of the products in our store. You can know for sure if one of our products is covered by the guarantee if you see this button on the product page: .

We constantly check out our competitors to ensure that we are competitive in offering you the best selection of dog products at the lowest price possible. If you happen to find a lower price at one of our competitors, let us know – almost always we can match it or even beat it! You can submit a lower price by contacting us through our online form or by calling us at 888-404-4076. When contacting us, we will need to know the exact URL of the competitor's product page where you found the lower price, and the product name, size and color that you want, so please be prepared with this information.

60 Day Returns & Best Returns Policy Guarantee
Here at The Uncommon Dog we’ve tried to create a return policy for our Dog Products that is as “customer friendly” as possible. And there are certain regulations and manufacturer restrictions that we have to adhere to. We want to be completely upfront with you about what those things are. If you happen to find a return policy better than ours at one of our online competitors, let us know (we do have some criteria, which are listed in our Return Policy). We'll match it.

With few exceptions, online retailers of dog products will either not accept returns under any circumstance or their return policies are very limited. Here is the truth: Return policies for dog products are very restrictive industry-wide because once your dog has had contact, it cannot be resold. We guarantee that everything you buy from us will be in brand new condition when you receive it, and we want to keep it that way.

We want you to be completely satisfied with your purchase from If you are not satisfied with your purchase, you can return it within 60 days. Please fill out our Return Form to get the process started.

Please understand that we can only accept returns for dog products in brand new, never used, unwashed, unassembled, uninstalled condition, and your dog cannot have had any contact with the item whatsoever (no hair, no odor, no dog "breadcrumbs" at all). You can view the complete details of our Return Policy.

Restocking Fees
Some of our manufacturers charge restocking fees of up to 30% for merchandise that is returned for reasons other than manufacturer defect. Restocking fees (if applicable) are listed in the "Specifications" tab for each product on our website.

Refund Amounts
Also, it is important for you to be aware that if the dog product you purchased qualified for a “Free Shipping” promotion, the actual outbound shipping costs will be deducted from your refund amount (we will provide you with the exact amount when the return is processed).

Manufacturer Defect
If there is a manufacturer defect and you would like a replacement for the exact item you received, please contact us. If you would like a refund rather than a replacement, outbound shipping will be deducted from your refund.

Customer Reviews

Average Rating

This is a high quality product. It's worth every penny. I can pretty much guarantee that your cat wont enjoy using it but my average sized cat still uses the 'small' sized window with no problem. It took one day to train her and maybe 2 or 3 weeks for her to really get used to it. During those weeks, i would try to leave healthy treats inside and out side of the window for positive re-enforcement. And she is not allowed to use the 'people' door anymore. If she wants to go out, she has to use the window because she still annoyingly paws at the door waiting for someone to open it. Hopefully that will subside soon. I live in Michigan where we have icy-cold, windy winters and humid, scorching-hot summers. I've had this window for about 3 or 4 months now and it's proven to keep the wind, bugs and weather out even during sudden lake effect storms and the small touch of Hurricane Sandy that influenced the Midwest weather recently. This window allows my cat to come and go as she pleases while allowing me to still keep my home secure. To secure your home, you'll need to purchase and install a lock that's suitable for your window. And, of course, be sure that no one can reach their arm through the window to a door knob or a lock on another window near by. An added bonus is that we now keep the litter box out side on our porch for her use which keeps our home smelling better and, in turn feeling cleaner--especially in our small condo living space. The only downside I have for this product is that the door flapping is a bit loud so it can be a little bit startling at night. I doesn't bother me too much anymore because the noise is always the same and I've learned to disregard it.

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