Measure the clear finished width at more than one height, the sill or slab condition, available side mounting surfaces, and the elevation relationship between the opening and nearby grade. Record obstructions and take straight-on and side-angle photographs. These inputs support planning, but final dimensions should be verified for the selected system before fabrication or installation.
Do not measure only the moving door panel or curtain.
Last updated: 2026-05-25
Measure the finished opening at multiple points, then document the sill or slab, side mounting surfaces, nearby grade, drainage, obstructions, and bypass paths. These observations support planning; final dimensions must be verified for the selected system.
A tape measurement, address, or flood zone cannot establish structural capacity, anchor selection, product operating height, or property-specific water level.
It can support an initial review. Fabrication or installation dimensions should be verified against the selected system and the actual mounting surfaces.
Measure clear opening, not door curtain width.
Document the geometry and obstructions. The selected system's supplier or installer must determine the required survey method.
Each opening measured independently.
Get a measurement and quote for your openings.
Book measurement