🚨 FREE SHIPPING ON ORDERS OVER £50  |  OFFER ENDS FRIDAY AT 23:59  |  Loading...

Dog Flap

What Dog Door Size Options Are Available?

Dog doors come in a wide variety of sizes to accommodate different breeds. It's important to choose a door based on your dog’s full-grown size, even if your dog is still a puppy.

The image above (not shown here) is approximately to scale. The largest door on the left is the PetSafe 660, which is the biggest option available. PetSafe's large-size doors are consistent in dimensions, while their medium doors are similar in size to the Dog Mate Large door. Smaller size options are also available from both PetSafe and Dog Mate, offering a good range between medium and small.


Dog Door Product Options


Staywell Aluminium Dog Doors

Staywell 600 Series by PetSafe

Originally launched under the Staywell brand, now owned by PetSafe, these doors have a long-standing reputation for reliability. The 600 series features strong aluminum frames and durable rubber flaps with magnetic closures to help keep the flap shut. For added control and insulation, each door includes an internal slide-in panel—ideal for windy or cold weather, or for times when you want to restrict your dog’s access.

A standout in this series is the PetSafe 660 Extra-Large Dog Door, the biggest dog door we offer.

  

PetSafe Extreme Weather Doors

PetSafe Extreme Weather Doors

On colder days, pet doors can lead to noticeable heat loss. PetSafe’s Extreme Weather Doors are designed specifically to reduce that. These models feature triple-flap construction: two durable rubber flaps and one insulated thermal flap in the middle for added energy efficiency. The flaps are adjustable to ensure a snug fit after installation, and they also come with an internal slide-in panel for extra insulation or to control your pet’s access.

  

Staywell Original Dog Doors

Staywell Original Series

A tried-and-true classic, the Staywell Original Dog Doors are among the most popular and best-selling dog doors worldwide. Cost-effective and reliable, these doors feature rigid flaps with U-shaped draught excluder frames and come with internal slide-in panels. They’re available in three sizes and three colors: white, brown, and grey.

  

Dog Mate Dog Doors

Dog Mate Door Range by Pet Mate

Pet Mate, a trusted UK-based manufacturer, offers a range of dog doors comparable to other brands. A key difference is their small-sized door, which is slightly larger than standard and features a rigid flap, making it a great option for homes with both dogs and cats. These doors are made with robust frames and clear rigid flaps and include slide-in rear panels for insulation and access control.

  

Replacement Dog Door Flaps

Replacement Dog Door Flaps

Yes, you can replace a broken or worn-out dog door flap. We stock a full range of replacement flaps from Staywell, PetSafe, and Dog Mate, along with various spare parts to help you make quick and easy repairs.


Can You Install a Dog Door in a Glass Door?

Yes—but with limitations. For smaller dogs, a model like the PetSafe 280, originally designed for large cats and small dogs, can be installed in glass, as it requires a circular cutout. Larger dog doors require a square or rectangular cut, which is significantly more difficult in glass.

If your glass door is made of two panels, you might consider replacing the lower panel with a PVC-reinforced panel, which is stronger and easier to modify for dog door installation.


Grid View:
(1)

Petsafe Staywell 600 Small Aluminium Cat or Dog Flap

£30.98
Small Dog Flap Staywell 600 AluminiumSpecificationsSuitable for all doors up to max 2" (50mm)Overall size : 298.7mm x 201.6mm, (11 3/4" x 7 15/16")Cutout Size : 245mm x 150mm, (9 5/8" x 5 7/8")Pet Max shoulder width : 135mm, (5 3/8")This small dog flap gives your pet all the freedom he needs whilst being robust to survive the daily knocks from excited dogs. The outer frame is manufactured from alu..
(2)

Petsafe Staywell 620 Medium Aluminium Cat or Dog Door

£66.00
Staywell 620 Aluminium Medium Dog Flap From PetSafeStaywell medium dog flap From PetSafe has an aluminium outer frame and a flexible rubber flap this gives your pet all the freedom he needs.Easy to install, the solid aluminium frame has reinforced corners for heavy use or for multiple pet homes. The flexible, soft flap is tinted and adjustable.A magnetic flap closure and pile weather stripping alo..
(0)

Petsafe Staywell 640 Large Aluminium Dog Door

£69.78
Large Dog Flap Staywell 640 From PetSafeSpecificationsSuitable for all doors up to max 2" (50mm)Overall size : 502.6mm x 329.1mm, (19 13/16" X 12 15/16")Cutout Size : 451mm x 277mm, (17 3/4" X 10 7/8")Pet Max shoulder width : 264mm, (10 3/8")This Staywell 640 aluminium large dog flap gives your pet all the freedom he needs. Easy to install, the solid aluminium frame has reinforced corners for heav..
(0)

Dog Flap 660 Staywell XL Aluminium Door Frame

£124.98
Staywell 660 Extra Large Dog Flap From PetsafeSpecificationsSuitable for all doors up to max 2" (50mm)Overall size : 692.6mm x 417.1mm, (27 1/4" X 16 7/16")Cutout Size : 642mm x 366mm, (25 1/4" X 14 3/8")Pet Max shoulder width : 352mm, (13 13/16") PetSafe Extra Large Dog Flap 600 efThis Staywell 660 aluminium extra large dog flap gives your pet all the freedom he needs. Easy to install, the sol..
(1)

Small - PetSafe Plastic Extreme Weather Energy Efficient, White

£64.98
Petsafe Extreme Weather Dog Door SmallSpecificationsPet Size Up to 15 poundsFlap Opening 5 1/8” x 8 1/4"Frame Dimensions 7 1/2” x 11”Cut Out 6 3/8” x 10 1/8”Description A clever door designed to reduce heat loss with a u-value of 1.2 Not two flaps but three with a heat resistant internal flap. Strong magnets that can cope with a storm force of 5 and an internal clip-on panel for extreme cold or..
(0)

Customer Return Medium - Plastic Extreme Weather

£53.99 £74.99
Customer Return Tatty Box Extreme Weather Dog Flap Medium With three flaps this is the perfect door for extreme climates, the Extreme Weather Pet Door protects your home from extreme temperatures while giving your pet the freedom to come and go. This durable door with a 3-flap system delivers maximum energy efficiency that’s 3-½ times higher than our standard single-flap pet doors.Specification..
(0)

Medium - PetSafe Plastic Extreme Weather Energy Efficient, White

£74.99
Petsafe Extreme Weather Dog Flap Medium With three flaps this is the perfect door for extreme climates, the Extreme Weather Pet Door protects your home from extreme temperatures while giving your pet the freedom to come and go. This durable door with a 3-flap system delivers maximum energy efficiency that’s 3-½ times higher than our standard single-flap pet doors.SpecificationsPet Size Up to 40..
(0)

Customer Return Large - Plastic Extreme

£75.59 £94.98
Customer Return Tatty Box Extreme Pet Door Large The perfect door for extreme climates, the Extreme Weather Pet Door™ protects your home from extreme temperatures while giving your pet the freedom to come and go. This durable door with a 3-flap system delivers maximum energy efficiency that’s 3-½ times higher than our standard single-flap pet doors.SpecificationsPet Size Up to 100 poundsFlap Op..
(0)

Large - PetSafe Plastic Extreme Weather Energy Efficient, White

£94.98
Petsafe Extreme Weather Pet Door Large The perfect door for extreme climates, the Extreme Weather Pet Door™ protects your home from extreme temperatures while giving your pet the freedom to come and go. This durable door with a 3-flap system delivers maximum energy efficiency that’s 3-½ times higher than our standard single-flap pet doors.SpecificationsPet Size Up to 100 poundsFlap Opening 10 1..
(0)

[PRE-ORDER] Pet-Tek Glass Fitting Maxi Dual Glaze Pet Door – White (G-SDDW)

£44.94
THIS PRODUCT IS CURRENTLY ON PRE-ORDER. STOCK DUE MID-LATE JULYPet-Tek Maxi Dual Glaze Pet Door – White (G-SDDW) Premium Access for Pets – A Stylish White Finish Built for Glazed Doors The Pet-Tek Maxi Dual Glaze Dog & Cat Door in White is the perfect solution for homeowners looking to give their pets more freedom without compromising on style or insulation. Designed for installation int..
(0)

Dogwalk Glass Fitting Dog Door - Clear – G-DDC

£59.99
Give your dog the freedom they deserve with the Dogwalk Glass Fitting Dog Door (G-DDC) – the perfect blend of function, security, and sleek design. Specifically engineered to be installed in single, double, or triple-glazed glass doors and windows, this premium pet door is ideal for modern homes where style and convenience go paw-in-paw.Key Features: Glass Fitting Design: Designed for seamless ..
(0)

Dogwalk Glass Fitting Dog Door - White - G-DDW

£59.99
Give your dog the freedom they deserve with the Dogwalk Glass Fitting Dog Door (G-DDW) – the perfect blend of function, security, and sleek design. Specifically engineered to be installed in single, double, or triple-glazed glass doors and windows, this premium pet door is ideal for modern homes where style and convenience go paw-in-paw.Key Features: Glass Fitting Design: Designed for seamless ..
Out of Stock
(0)

PetSafe - Electronic Dog Door Smart Door - Large PPA19-15791

£280.92
PetSafe Electronic Dog Door SmartDoor - Large Description Our innovative Electronic SmartDoor gives your pet a key to the house so he can come and go as he pleases. Using radio-frequency technology, the SmartDoor reads the unique signal of a SmartKey™ worn on your pet’s collar and triggers the battery power-driven flap to unlock. When the SmartDoor no longer senses your pet’s SmartKey, the fla..
(1)

PetSafe - Staywell - Small Dog Door - White - 715

£15.59
Staywell Dog Door Flap From PetSafe 6mm PanelSpecificationsOverall size : 236mm x 198mmCut out size : 185mm x 158mmPet Max shoulder width: 147mm**Maximum Panel Width 6mmFor this small white door with a tunnel, liner click hereDescriptionThe 715 is an internal door cat flap in white a small door designed for use when there are cats and dogs sharing the pet door. Simple two-way locking system with a..
(1)

PetSafe - Staywell - Small Dog Door - Brown - 730

£17.99
Small Door Flap Brown Suitable for Sharing Cats DogsSpecificationsOverall size : 236mm x 198mmCut out size : 180mm x 155mmPet Max shoulder width: 147mm**Maximum Panel Width 6mmFor this door with a tunnel, liner click hereDescription Small pet door - Brown Brown finish with See Through Flap. Lockable security barrier. Suitable for any thickness of walls doors but requires customer supplied tunn..
(1)

PetSafe - Staywell - Small Dog Door - Grey - 737

£23.99
Small Cat Dog Door GreySpecificationsOverall size : 236mm x 198mmCut out size : 180mm x 155mmPet Max shoulder width: 147mmColour is light grey - silver**Maximum Panel Width 6mmFor this door with a tunnel, liner click here Small pet door - Grey Grey finish with See Through Flap. Lockable security barrier. Suitable for any thickness of walls doors but requires customer supplied tunnels Dimens..
(3)

PetSafe - Staywell - Medium Dog Door - White - 740

£29.99
Staywell Medium Dog Flap White Frame Clear FlapSpecificationsOverall size : 352mm x 294mmCut out size : 281mm x 237mmPet Max shoulder width: 219mmDescription The Staywell 740 dog flap in white with a rigid clear flap is the best selling dog door from PetSafe on the market for decades this is a tried and tested value for money door. The internal side has a slide I panel that can be used to close t..
(0)

PetSafe - Staywell - Medium Dog Door - Brown - 755

£33.42
Medium Dog Flap Brown Staywell PetSafeDescription Medium brown pet door Brown finish with See Through Flap. Lockable security barrier. Supplied with tunnel extension for door thickness up to 2" Suitable for any thickness of walls doors but liner e.g. soffit board required Dimensions Overall size : 352mm x 294mm Cut out size : 281mm x 237mm Pet Max shoulder width: 219mm Download P..
(0)

Customer Return - White - 760

£33.59 £39.98
Customer Return: Very Tatty BoxLarge White Pet Door with a white finish and a See-Through Flap.Lockable security barrier to control your dog. Supplied with tunnel extension for door thickness up to 2." suitable for any thickness of walls and doors, but a liner, e.g. soffit board, is required Overall size : 456mm x 386mm Cut out size : 370mm x 314mm Pet Max shoulder width: 290mm Please ..
(0)

PetSafe - Staywell - Large Dog Door - White - 760

£39.98
Staywell 760 Large Dog Flap White by PetsafeDescription Large White Pet Door with white finish with See Through Flap. Lockable security barrier to control your dog. Supplied with tunnel extension for door thickness up to 2." suitable for any thickness of walls and doors but liner, e.g. soffit board, required Dimensions Overall size : 456mm x 386mm Cut out size : 370mm x 314mm Pet Max s..
(1)

Closer Pets - Dog Mate - Lockable Dog Door - White - 221

£23.99
Dog Mate Small Dog Door White 221wdSpecificationOverall Width: 235mm (9.25")Overall Height: 252mm (10")Cut Out Width: 210mm (8.25")Cut Out Height: 227mm (9")Cut Out Height: 227mm (9')DescriptionSmall dog flap in white from Dog Mate s developed for small dogs (Yorkshire Terriers, Pekinese, Dachshund, etc.) up to a shoulder height of 14" (360mm) or large cats. For cats and small dogs to 14" (360mm) ..
(1)

Closer Pets - Dog Mate - Medium Dog Door - White - 215W

£29.39
Dog Mate Medium Dog Door White 215wSpecificationOverall Width: 290mm (11.375")Overall Height: 350mm (13.75")Cut Out Width: 242mm (9.5")Cut Out Height: 300mm (11.75")Description The medium flap is robust construction and the security locking panel are popular features of all Dog Mate doors. The medium door is suitable for Spaniels, Terriers, Poodles, etc. up to 18" (460mm) shoulder height.  ..
(0)

Closer Pets - Dog Mate - Medium Dog Door - Brown - 215B

£39.98
Brown Dog Mate Medium Door PM215SpecificationOverall Width: 290mm (11.375")Overall Height: 350mm (13.75")Cut Out Width: 242mm (9.5")Cut Out Height: 300mm (11.75")Description The robust construction and security locking panel are popular features of all Dog Mate doors. The medium door is suitable for Spaniels, Terriers, Poodles, etc. up to 18" (460mm) shoulder height. For dogs up to 18" (460mm) sh..
(0)

Closer Pets - Dog Mate - Large Dog Door - Brown - 216B

£47.99
Dog Mate Large Brown Door and FlapSpecificationOverall Width: 366mm (14.375")Overall Height: 441mm (17.375")Cut Out Width: 318mm (12.5")Cut Out Height: 391mm (15.375")Description The robust construction of this door makes it suitable for Labradors, German Shepherds and other large dogs to 25" (630mm) shoulder height. For dogs up to 25" (630mm) shoulder height. Features Self lining to 2" ..
(1)

Medium Dog flap & Wall Tunnel - Cavity Wall

£90.64
Medium Dog Flap In-Wall Tunnel White 740Fitting a dog flap in a wall is no easy task but our kit should help you to achieve a professional finish.The Wall Tunnel KitThis kit includes the tunnel and outer and inner flaps as shown in the picture.Fitting a dog flap through a single brick wall or a cavity wall requires a tunnel liner. Our kit has a tunnel liner that is cut to size to fit the dog door ..
(0)

Dog Doors For Walls Large Flap and Tunnel - Cavity Wall 760

£117.74
Large Dog Flap In-Wall Tunnel White 760Through a wall dog door is no easy task but our kit should help you to achieve a professional finish.The Wall Tunnel KitThis kit includes the tunnel and outer and inner flaps as shown in the picture.Fitting a dog flap through a single brick wall or a cavity wall requires a tunnel liner. Our kit has a tunnel liner that is cut to size to fit the dog door outer ..
Showing 1 to 26 of 26 (1 Pages)