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PetSafe Pet Doors PetSafe Ultimate Pet Door

PetSafe Ultimate Pet Door

Formerly known as Johnson Ultimate Door

The PetSafe Ultimate Pet Door has been discontinued by PetSafe. The replacement flaps are out of production as well.

NOTE: Pride brand pet door flaps have the same 2-piece design and are relatively the same size as their PetSafe/Johnson counterparts, with the exception of the small (customers modify the small to fit by cutting the "nubs" off on the top of the flap). Other sizes do not require any modification. Click here for the Pride Pet Door Flaps.

Customers need to be aware that PetSafe has not made an alternative door that will fit the same cut-out dimensions as the Ultimate pet door model. Replacement flaps are no longer available, customers will need to decide on another pet door model to replace their current door.

You can choose between two options; revise the cut through the door or wall and install a different brand / model pet door, or install a Custom Made pet door that is made to fit the existing cut through the door or wall you currently have. Every manufacturer has their own unique pet door sizes (Even though there may be several sizes labels LARGE or SMALL for example).

If you would like to find out more information about Custom Made Pet Doors for walls and door, please see our Security Boss Custom Made Pet Door section. You will find that these models are more expensive that your QuickFit door was, however, the quality of the door is the best. You can maintain them forever.

PetSafe Ultimate Pet Door

The most noticeable characteristic of this door is the unique flap.
There is an "inner" flap with an "outer" ring. Some call this a dual flap, however, it is considered a single flap, non-insulating pet door.

Flap Size


4 1/4 x 7"
7 3/8" x 10 1/8"
8 3/16" x 10 11/16"
8 x 11 1/2"
11 7/8"x 15 5/8"
12 5/8" x 16 3/8"
10 3/8" x 15 3/4"
14 5 /8" x 20"
15 1/2 x 20 7/8"
Extra Large
13" x 18 1/2"
17 15/16" x 22 9/16"
18 13/16" x 23 3/8"

The information above is provided for reference.