This Dogwalk Intermediate Dual Glaze 4 way locking Dog Door is ideal for dogs up to 40cm shoulder height at adult size (Fox Terriers/Bischons/ some Spoodle crosses etc), it is designed for double glazing installation, however it can also be installed into wooden or aluminium doors (up to a thickness of 32mm). 
See our other slimline option for single glazed glass.
Hole size required is 320mm diameter 

Total dog door size including frame is 340mm at the deepest point & 340mm at the widest point. 

Flap size is 240mm H x 215mm W. 

This door’s generous flap size of 240mm x 215mm is designed and warrantied for dogs up to 40cm shoulder height - we recommend dogs under 35cm shoulder height would be better with a Catwalk Maxi large cat/small dog door as the flap size is smaller and less weight on their back. For dogs larger than 40cm but under 45cm to the shoulder at adult height we recommend the Dogwalk Medium Dog Door –these other doors are also available on our website in the slimline options or deeper for double glazing, wooden or aluminium doors.
4 way locking system with additional security caps/clips 
Weather seal around flap to reduce draughts and enable smooth quiet action plus magnet at base of flap draws back to magnet in frame to prevent excessive flapping and keep flap closed in draughts
Available in clear or white strong Polycarbonate

Parts etc. available, if you cannot find the part you require on our parts product page please email us, send us a question or call us to discuss.

*NOTE toughened/tempered glass & also double glazing can NOT be cut directly into & you may need to order the area reglazed ... we can advise you on this if you call/email us with your situation and the size of the glass in that area.

Overall size : 340mm x 340mm
Flap size : 240mm x 215mm
Cut out size required : 320mm
Application : dual glazing / wooden doors / aluminium doors up to 32mm
Recommended pet size : Intermediate – under 40cm to shoulder at adult height