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Havahart® Medium Aluminum Pet Door

model #: 7121

 $7.49 Sale
$70 (89% off)
Free Shipping over $99
Havahart® Medium Aluminum Pet Door Features

Suited for pets up to 40 lb 
Easy to install
Provides medium-sized pets indoor & outdoor access
Lockable steel security panel
Read full product details »

US Availability: In-Stock

Havahart® Medium Aluminum Pet Door


Give your dog the freedom he deserves and give yourself the security you expect with our medium aluminum dog door.
Watch our short benefits video


Made from high quality aluminum to ensure a lasting solution, our medium aluminum dog door fits hollow and solid doors. The flexible PVC flap includes a magnetic energy seal to reduce temperature loss from your dog entering and exiting the pet door.


The high quality aluminum construction provides a more durable solution than plastic dog doors. These pet doors are recommended for indoor applications or outdoor access to covered areas, as well as outdoor applications for temperate climates.


Havahart® aluminum pet doors are suited for frequent use and high-energy dogs.



Our aluminum pet doors accommodate door widths from 1.25 in to 2.25 in.


The medium aluminum dog door measures 9.5 in x 13 in and accommodates breeds up to 40 lb.
Additional pet door sizes ranging from small to extra large are also available


How to Measure Your Dog for the Correct Size Door:

  1. Height: Measure your dog from the floor to the highest point of the shoulders. The flaps of the dog door should be at least 2 inches above the top of your dog's shoulders.
  2. Width: Measure your dog at the widest point and add an additional 1-2 inches to be safe. Remember: If your dog is a puppy or is going to continue to grow, please take that into account when measuring. Also take into account the amount and length of your dog's hair. The width of your dog may be smaller than you measure if your dog has long hair.


Additional Points to Consider When Choosing the Correct Size Dog Door


Ensure the dog door is low enough for your dog to step into. Having the door too high could make it difficult for your dog to step through. Also take into account the age of your dog, as older dogs might have an issue raising their legs high enough to get through the door.
If you have more than one dog, ensure the door you choose will work for both dogs.
Your pet is going to use the pet door from both sides, so ensure that the height of the dog door works from both sides.



Installation can be completed in 3 easy steps and your pet door comes with step-by-step instructions. Lockable steel security panel is also included for added security.




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Pet Doors from Havahart® - the recognized brand name for animal restraint, containment and training devices.

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