Staywell 740 - Medium Dog Flap White - by Petsafe

4 reviews 1093 sold. Only 37 remain
Brand: PetSafe
Product Code: REL740EFS
Availability: In Stock
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Product Description

Staywell Medium Dog Flap White Frame Clear Flap


Overall size : 352mm x 294mm
Cut out size : 281mm x 237mm
Pet Max shoulder width: 219mm

Staywell PetSafe door showing the flap and U shape open


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 the door in high winds or on cold nights to help reduce heat loss, or it can be used to stop your dogs and cats from going outside when it suits you.

This latest version of this door has a neat frame that is easy to clean. The design allows for the flap to be replaced in the event it gets damaged. 

Tunnels are supplied that act as a lining on doors up to 2 inches thick but these doors can also be fitted through walls or panelling wider than 2 inches but you will need to form a tunnel lining of your own with UPVc or rigid foam. 

Medium Sized white pet door can be used by large cats and medium or small dogs.
White finish with See Through Flap.
Lockable internal slide in the 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

The internal view of a PetSafe 740 showing the internal slide in panel.

These doors come with internal barriers as standard and a tunnel The barriers act as locks to control your pet's movements or to close off the door when it's very cold. The tunnels will line the door hole to hide it and add to safety.

Overall size: 352mm x 294mm
Cut-out size : 281mm x 237mm
Pet Max shoulder width: 219mm

Order as many as you like. Postage remains the same at £2.99, or for spend over £50,00 postage is free.


The medium door and the large door have tunnels that are best glued the hole in the panel should be no more than 2mm bigger when cut to the correct size and this gap is best filled with silicone to seal the door panel.

Please note these doors will not keep humans out. You will need to consider security on other internal doors. Caution small children will need watching. They will be able to get through this size door 

Use Stelmax contact glue on the tunnels and neutral cure silicone between the door panel and the pet door tunnel.

Download Product Manual



Q. Do these fit a composite door?

R. Yes but there are a few things to watch for.

The mouldings on the composite can get in the way and there is an internal panel on the dog door that slides in from the top. So these two points need to be considered.

The installer should silicone seal the outer frame and if possible add an architrave or rigid angle to cover the composite where it is cut to ensure it stays watertight.

You should also consider using an extreme weather door instead but you’ll need to check the sizes.

Extreme weather doors have a u-value of 1.2 which is more in keeping with the design of the composite and they are more paint friendly.

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