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All the doors and other products on our website that have the option to be ordered as a made to order size will be processed in the normal way when you go through our checkout but we will send you an additional email confirmation to make sure you have understood the sizing and ordering references. Once you confirm this email we will process the order immediately.
This order process has prevented many doors being ordered with a misunderstanding of the order sizes related to the actual opening or overall sizes of some of the doors available. We are always at the end of a phone if you are not sure what to measure and how to order.
The best way is of course to order with both the overall size including a new sub frame and the ordering (opening) size that is the measurement of the frame inside.
There are a couple of exceptions to this system, the Hormann N80 and DF98 range of up and over garage doors which use a different ordering system altogether.