The PPDS-11 is a PetSafe ultimate dog door for small pets. The PPDS-11 ultimate pet door is for dogs that weigh up to 12 pounds. The flap opening measures 4.25 inches by 7 inches. This dog door has an aluminum frame with a scratch-resistant enamel finish. The double flap system on this ultimate pet door reduces energy loss; the outside flap acts as weather stripping. The flexible vinyl flaps are see-through, and the locking closing panel can be placed on either side of the door.

The P1-ZB-11 Screen Door is a door that can be put into fiberglass or metal screen doors or windows as well as sliding or swinging doors. The flap on this door measures 8 inches by 10 inches, and the door is recommended for pets that weigh up to 30 pounds. This PetSafe pet door is made of ABS plastic and has a fiber screen; the door locks from the inside.

A medium sized dog will need a slightly bigger door. The PPDM-11 is a ultimate door designed for dogs that weigh up to 40 pounds. The flap opening measures 8 inches by 11.5 inches. This pet door has the same features as the PPDS-11, but is for slightly bigger dogs.

One PetSafe door for large dogs is the PPDL-11 Ultimate Door. This door has a flap opening that is 10.375 inches by 15.75 inches and is designed for pets that weigh up to 80 pounds. The frame of this door is also made of aluminum with an enamel finish.

Other large pet door models are designed for dogs that weigh up to 100 pounds. If your dog weighs between 125 and 220 pounds, it will need an extra large door. The PPDX-11 Ultimate Pet Door is a PetSafe door for dogs that weigh up to 125 pounds; this door has an opening that measures 13 inches by 18.5 inches. It has all the features of the smaller dog door models, including the double flap system that reduces energy loss.

A dog door can be put into standard or patio doors. Patio doors are also available in different sizes for small, medium, and large dogs. Patio dog door models are made of shatter-resistant tempered glass and can be put in left or right sliding doors. The locking security cover can be put on either side of the door.

Your dog will need to be trained to use a dog door. Dogs using a pet door should be trained in basic obedience as well. All door models include an installation and training video. Installing a dog/cat door isn't difficult; you probably already have the necessary tools in your house right now.

Dog and cat doors made by this company are convenient for you and your pet. They know that you will love their doors.