Openings are grouped by kind and size, so '10×10 overhead door × 3' is one line and '12×12 overhead door × 1' is another. Sliding doors additionally generate a track line: rail at roughly twice leaf width, two trolleys per leaf, a bottom guide per door.
Also called: door schedule · window count · overhead door · sliding door track
- 1Openings are keyed by kind|WxH and counted
- 2Labels come from OPENING_KIND_META — the same source the design menu uses
- 3Sliding track LF = sum over doors of (2 × width + 0.8)
- 4Opening trim LF = 2 × (width + height) per opening
The comment states the rule: 'One vocabulary everywhere: the BOM, the estimate and the supplier order all call an opening what the menu calls it.' A door named one thing on the drawing and another on the order is the classic source of the wrong door arriving.
- Door naming drifts between drawing, estimate and order
- Sliding-door hardware is forgotten
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