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A Great Dane needs a genuinely large opening — most sources put the requirement at 12-16 inches wide and 24-30 inches tall to clear the shoulders and let the dog pass without ducking. That rules out most “large” dog doors, which are sized for 40-80 lb dogs, not 100-180 lb giant breeds. We verified 9 real doors and door systems actually rated for Great Dane-sized dogs (generally 100-220 lb capacity), across plastic, aluminum, and electronic options.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | PetSafe Extra Large Plastic Dog Door | $179.95-$204.99 | Amazon · eBay |
| 2 | PlexiDor Extra Large Dog Door | $250.00-$700.00+ | Amazon · eBay |
| 3 | PlexiDor Performance Electronic Automatic Door | $700.00-$1,200.00+ | Amazon · eBay |
| 4 | Ideal Pet Products Super Large Aluminum Pet Door | $130.00-$180.00 | Amazon · eBay |
| 5 | High Tech Pet Electronic Large Dog Door | $474.99 and up | Amazon · eBay |
| 6 | Endura Flap Giant Breed Dog Door | $429.99 and up | Amazon · eBay |
| 7 | PetSafe Freedom Aluminum Pet Door, X-Large | $134.95 | Amazon · eBay |
| 8 | Ranger by Freedom Pet Pass, Large | $359.00 | Amazon |
| 9 | Hale Pet Door, Large/Giant | $290.00 and up | Amazon · eBay |
The picks, in detail
PetSafe Extra Large Plastic Dog Door
Rated up to 220 lb with a 13.625″ x 23.625″ flap opening — the most widely available extra-large door and the standard budget benchmark for Great Dane owners.
- Rated for pets up to 220 lb
- 13.625″W x 23.625″H flap opening
- Paintable frame, snap-on closing panel
- Most widely available XL door
- Easy DIY installation
- Basic plastic flap, less weatherproof than aluminum options
PlexiDor Extra Large Dog Door
A premium door with an aluminum frame and a rigid, well-insulated panel rather than a flexible flap — widely recommended for giant breeds who tend to push through flap-style doors hard.
- Rigid panel, not a soft flap
- Aluminum frame
- Door, wall, and glass mount versions available
- Much sturdier than flap-style doors for a large, powerful dog
- Better energy efficiency
- Significantly more expensive than plastic flap doors
PlexiDor Performance Electronic Automatic Door
The same rigid-panel PlexiDor build, but electronically locked to your dog’s collar chip — it stays sealed except when your dog approaches, which matters more on a giant breed’s larger opening.
- Electronic chip-activated locking
- Rigid panel construction
- Automatic seal when not in use
- Only opens for your own dog, not strays or wildlife
- Better seal than a passive flap when idle
- Highest price and most complex installation on this list
Ideal Pet Products Super Large Aluminum Pet Door
A 15″ x 20″ aluminum-framed door from one of the most established pet-door brands, sitting between PetSafe’s plastic doors and PlexiDor’s premium tier on both price and build quality.
- Aluminum telescoping frame
- 15″ x 20″ flap size, Super Large
- Aluminum frame is more durable than plastic
- Telescoping frame fits varying wall/door thickness
- Flap opening is narrower than PetSafe’s XL — measure your dog’s shoulders first
High Tech Pet Electronic Large Dog Door
A collar-activated electronic door built for larger openings, giving Great Dane owners a security-focused option distinct from PlexiDor’s electronic line.
- Collar-key electronic activation
- Insulated panel
- Keeps other animals out while letting your dog in freely
- Premium price tier, similar to PlexiDor’s electronic model
Endura Flap Giant Breed Dog Door
Endura Flap makes a dedicated giant-breed size, using a dense, well-insulated flap material rather than aluminum or plastic — a strong energy-efficiency pick if the door faces a cold climate.
- Giant-breed specific sizing
- Dense insulated flap material
- Strong energy efficiency for a flap-style door
- Purpose-sized for giant breeds specifically
- Premium price for a flap-style (not rigid-panel) door
PetSafe Freedom Aluminum Pet Door, X-Large
PetSafe’s step up from its basic plastic door — an aluminum-framed version with a magnetic double-flap seal, at a lower price than PlexiDor or Ideal Pet’s aluminum doors.
- Aluminum frame
- Magnetic double-flap seal
- X-Large size
- More weatherproof than PetSafe’s plastic door
- Mid-range price for an aluminum door
- Flap-style door, less rigid than PlexiDor’s panel
Ranger by Freedom Pet Pass, Large
An insulated door-mounted or wall-mounted option in a Large size, positioned as a mid-tier alternative to the premium PlexiDor and Endura Flap doors.
- Insulated construction
- Door and wall mount versions
- Large size
- Mid-tier price between basic plastic and premium aluminum doors
- Verify Large sizing clears your specific dog’s shoulder width before buying
Hale Pet Door, Large/Giant
A custom-built-in-the-USA pet door maker that will build to your dog’s exact measurements rather than selling only fixed sizes — the option for a Great Dane whose shoulders don’t fit any standard XL cutoff.
- Custom-built to order
- Wall-mount, door-mount, reinforced screen, and in-glass panel options
- True custom sizing for outlier-sized dogs
- Multiple mounting styles available
- Longer lead time than an off-the-shelf door
Buying tips
- Measure your Dane’s shoulder width and standing height at the withers before ordering — most sources recommend a 12-16 inch wide, 24-30 inch tall opening for giant breeds, wider than most “XL” doors sized for 40-80 lb dogs.
- A powerful dog pushing through a flimsy flap repeatedly can tear or loosen a basic plastic door over time; a rigid-panel door (PlexiDor) or a reinforced aluminum frame holds up better long-term for a 100+ lb dog.
- If you’re installing in an exterior wall rather than a door, confirm the specific model supports wall mounting — not every large dog door does, and wall kits are usually a separate SKU.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.