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Heavy Duty Dog Door

Heavy Duty Dog Door

Price: $98.00

100% Satisfaction Guaranteed Estimated Production Time: 2 to 4 business days.
  • Weather Tight
  • Chew Proof
  • Super Durable
  • Easy to Install
  • Lifetime Warranty
  • Made in MN, USA
  • In Stock

100% Satisfaction Guaranteed

Looking for a dog door that's the real deal? Look no further than the Heavy Duty Dog Door.

We have used these heavy duty dog doors over the years and haven't found a more durable, chew proof, weather tight dog door. They even seal out the brutal midwest winter cold and winds! Easy to install and made to withstand all weather, you and your dog will enjoy this dog door for years to come. 

Product Highlights: 

  • Weather Tighte
  • Chew Proof 1/4" Plexiglass
  • Indestructible Aluminum Frame
  • Energy Efficient Tight Seal Provided by Heavy Duty Spring Hinges
  • Easy to Install
  • Fits Dogs up to 120 lbs
  • Lifetime Warranty Includes Chewing
  • 12.5" x 17.5" Cut Opening, 14" x 20" Frame

There is a 20% restocking fee on all of our heavy duty dog doors for returns and exhanges. 

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 18 answers
Does this door work for dogs coming and going? (Can they get both in and out through this door?)
Grace B on Nov 14, 2014
BEST ANSWER: Yes, the door is two way. When the dog goes out the aluminum and plexiglass both open, coming back in only the plexiglass opens to the inside. Chuck B. Staff
Does this install in a door or is it a wall install only?
A shopper on Sep 13, 2015
BEST ANSWER: These pet doors are designed to install equally well as a wall mount, a door mount or any flat surface.
Chuck B. Staff
Can the door be sealed shut for security against unwanted entry when dog is not present?
Tara W on Mar 9, 2015
BEST ANSWER: It can be closed from the inside with the addition of a dog door closing panel -
Lori N on Jul 25, 2013
BEST ANSWER: I did have to add a layer of fuzzy weather stripping around the edge and trim it enough to still let the door swing. It still works well enough. A small dog can push it open; the pug who later came to live with us is a little afraid of it, but he will push it open when he wants to badly enough. Since it is stiff, I was afraid one of the dogs would get caught in it but this has never happened and the other dogs are happy with it. It is still better than the floppy doors that don't stay put. (Plus the dog that ate the floppy door couldn't eat through this!)
Can this door be installed on a metal security door with screen?
tammie c on Jul 27, 2015
BEST ANSWER: Only if there is a mounting surface that allows six lb. door to be mounted to its surface.
I have a glass door how can I install this?
A shopper on Jun 7, 2015
BEST ANSWER: If solid glass panel door...installation would have to be in adjacent wall or modify opening for a slider door. If the door has sections of panel glass, the panels need to be removed and a mounting surface installed on the edges and door mounted on this modification. Send an email to and I will forward a guide as well. Chuck B. Staff
Does this dog door work in a wall as well as a door?
Tonia Z on May 3, 2015
BEST ANSWER: Yes, there are instructions for installing the door in a wall.
Installing the Heavy Duty Dog Door® or Big Dog Door™ On A Wall
Installing your dog door on a wall:
The Heavy Duty Dog Door® and Big Dog Door™ are installed on the outside surface of a building, wall or door, etc.
Step #1:

measure height

Measure height

Measure the belly height of your pet from ground level to his underside to find the correct height of the door opening. Bottom edge is usually 6? to 12?. Do not mount flush to ground.
For the Heavy Duty Dog Door™ cut the opening 12-1/2? wide x 17-1/2? high. For the Big Dog Door™ cut the opening 16-1/2? wide x 25-1/2? high.
Step #2:

Tunnel in frame wall

Example of tunnel in frame wall

If mounted on garage or house wall, frame the depth of the wall to form a tunnel through the wall. (Use 2? X 4? or 2? X 6? material.) If needed, add a least a 1/2? x 1 1/2? flat outside mounting surfacing.
Step #3:

dog door opening

Cut opening, if needed add a 1-1/2? flat mounting surface.

Place door over opening and use the enclosed two 1 1/2” wood screws to hold door to opening.
Step #4:
Show dog how to use door. Your dog will learn to use your pet door almost at once, but there are a few which may be a little nervous at first.

The most important rule is to be patient.
Do not let the dog have a bad experience or it may become frightened.
Most dogs can be trained to use a pet door in a matter of hours. Your dog will respond to encouragement, repetition and play in particular.
Alternatively, use the door flap as part of a game – throw a ball through, for instance. As your dog responds to your encouraging calls, help it through the door, patting and congratulating it. Repeat the game several times, continually encouraging the animal with positive gestures and comments. Within a short time your dog will be totally familiar with its pet door and use it happily on its own.
Chuck B. Staff
I would like to purchase the security cover but do not see one?
Vickie S on Apr 3, 2015
BEST ANSWER: It's a separate product :
Can this be installed in a plexiglass window?
Dan H on Jan 30, 2015
BEST ANSWER: Here's what the manufacturer recommends for glass. I would guess it would be similar.

If solid glass panel door...installation would have to be in adjacent wall or modify opening for a slider door. If the door has sections of panel glass, the panels need to be removed and a mounting surface installed on the edges and door mounted on this modification. Send an email to and I will forward a guide as well.
Is there a trim provided to give a finished look to the cut edge of the door opening? My door has a metal skin and I am concerned about my dog getting injured by sharp edges left after cutting the door opening. The ad could use more detail.
Jay A on Jan 14, 2015
BEST ANSWER: Trim doesn't come with the door, but the company does have a wood trim or PVC trim kit you can order custom. If you're interested in that, contact our customer service team at
Will I need to buy two? one for the inside and one for the outside of the house? Or is there a wall insert? Trying to understand how many I will need. Thanks
A shopper on Dec 31, 2014
BEST ANSWER: This would just include the outside door and the hinge. If you need extra insulation, you could look at the closing panel we sell on the site.
How does this door lock?
A shopper on Dec 15, 2014
BEST ANSWER: You would pair it with the closing panel in order to keep it locked.
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