Midiflap and Maxflap draughtproof dog doors

We’re pleased to introduce the Midiflap and Maxflap draughtproof dog doors, catflaps suitable for small dogs and big cats. The Maxflap is ideal for cats such a Maine Coon, and dogs up to smaller spaniels will be able to get through comfortably.

The Midiflap

The Midiflap is a hybrid of the Petflap and the Maxflap. It is built to the same construction as the Petflap, ABS outers with a tricoya core, but is the same shape as the Maxflap. It’s not quite the same size as the Maxflap due to the different thicknesses of the construction materials.

The Midiflap has more width than the Petflap for your pets to get through as this tends to be the issue more than height for larger cats and smaller dogs. There is scope for bespoke sizing within the minimum and maximum sizes shown below.

The Midiflap has a rectangular frame and door with rectangular trunking. This makes it great to fit in a door or wall but not suitable for glass. It’s available in the same colours as the Petflap: white, black or silver or a combination.

Please excuse our poor photographs. We look forward to having much better photos to share soon.

The Maxflap

The Maxflap is made from tricoya, an accoya-based MDF that’s durable and weatherproof for 50 years. We turn it into a durable and weatherproof pet door designed to be set into a door panel or a wall. We supply the Maxflap with a natural finish.

You can apply a layer of oil, stain or spray paint (we recommend PlastiKote). This is not necessary to weatherproof the Maxflap as it is fully weatherproof with its natural finish.

How are the Midiflap and Maxflap draughtproof?

Just like the Petflap, the Midiflap and Maxflap are draughtproof because of their cut. The door will always be blown more firmly shut against its frame whichever direction a draught comes from. This means no rattling, no banging, no blowing open. Just like the Petflap, the Midiflap and Maxflap open easily with focussed pressure from a nose or paw.

This video shows a Maxflap painted white by the customer (video used with permission).

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Midiflap from rear with protective film in place
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Midiflap from front with protective film in place

Midiflap dimensions:

External frame minimum/maximum possible: 410x268mm/580x395mm
Pet access each side: 140x160mm/205x248mm
Door hole cut: 360x218mm/518x322mm

We can etch your pet’s name or your house name on the frame or flap.

Maxflap dimensions:

External frame: 487mm x 355mm
Pet access small side: 167mm x 208mm
Door hole cut: 437mmx310mm
Distance base of frame to base of pet access flap: 71mm
Distance from base of frame to trunking: 20mm on bottom edge, 25mm on other edges

This is the standard Maxflap we offer, but it’s not the only size we can make. We have some flexibility on the size of the outer frame.

We can etch your pet’s name or your house name on the frame or flap.


At the moment each Midiflap and Maxflap is made to order. The standard version starts from £265 inc VAT and the Maxflap from £299. Please get in touch with us at info@thepetflap.com or via the contact form to order a Maxflap.

Microchip controlled access

At the moment this is available only for a Petflap with extended trunking.