What door size do I need?
If you aren’t sure what size door to order, please use the form below to determine what size stock door and frame extensions (if required) you need.
How to measure
As your opening may not be exactly square we recommend taking three measurements. For the width measure top, middle and bottom. For the height, measure at the left, centre and right.
This will allow you to get an accurate measurement of the exact size of the opening the door will fit into. The smallest measurement is the one you should use when calculating the door size needed.
Finally, deduct 5-10mm from the measurements. This allows for a fitting allowance around door and means it can sit square when in place.
Please note: Security trim is recommended with all installs to cover any remaining gaps and also for added security.