How To Measure
It is important when measuring to ensure that there are no obstructions that would prevent the door from fitting flush to the frame it is going on, whether it be brick, steel or timber. This is from the floor level to the top of the endplate. Check that the width measurements at floor level and approximately 2 metres high to ensure that the opening is parallel.
Ensure that there is enough head room for the roller and curtain to roll up, this can be anything from 300mmsq to 450mmsq depending on the height of the door.
