Sectional Overhead Doors
Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
Showing changes from Rev 3
to Rev 4
in Sectional Overhead Doors.
---
title: Sectional Overhead Doors
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### The door type sets the panel construction and drives most downstream selections. {note}
+### The sectional overhead door type shall be specified, since it sets the panel construction and drives the downstream hardware and performance selections.
+
```datasheet
label: Door Type
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type: select
options:
− - "Standard lift — ~15-36 in. headroom (default)"
+ - "Standard lift — ~15-36 in. headroom"
- "High lift — ceiling well above opening"
- "Vertical lift — headroom ≈ door height, no horizontal track"
- "Low headroom — as little as ~9 in. headroom"
- "Follow-roof-pitch — sloped ceiling / roof pitch over 3:12"
drawing_ref: true
−default: "Standard lift — ~15-36 in. headroom (default)"
+default: "Standard lift — ~15-36 in. headroom"
```
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## Spare seals and rollers are inexpensive insurance against downtime on high-cycle dock doors, and a spare operator control board and remote are warranted on automated openings. {note}