I'm going to build a stud wall across a large room, and to start with we want a large open doorway in there, with a thought to adding doors later on. B&Q do some doors called Shannon which allow 6' or 8' openings (they are bi-fold). The doors are available in widths of 579mm & 290mm So a pair of each covers: 1738mm
But the advertising hoarding says: 1846mm
This implies a total door frame width of 108mm, or 54mm each side.
I thought door frames were normally 25mm thick? I thought 6mm per hinge is the tolerance too? So that would add up to 25 + 6 + 6 + 25 + 6 + 6 = 74mm, not 108mm
What am I calculating wrong?
The doors are 1981mm high and 35mm deep.
I want to ensure that I leave the right size hole!
Thanks Painters10