How to Measure an Opening for a Sectional Door (Step by Step) | ABX Sectional Overhead Door

Measure These Seven Values

1. Opening width (clear, three points)
2. Opening height (clear, two points)
3. Headroom above the opening
4. Side room, both sides
5. Door type area depth (for vertical lift)
6. Floor levelness at the threshold
7. Wall construction at the fixing line

Common Mistakes

Measuring to the frame instead of the clear opening, ignoring floor slope, and forgetting services (pipes, conduits) in the headroom zone.

Send Us the Numbers

With these seven values we return a track proposal and a dimensioned drawing - before you order anything.