# toprail-maximum-height-supported-after-2000 — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For toprail-maximum-height-supported-after-2000, paragraph citation is 1926.451(g)(4)(ii); type of requirement is maximum height; value (imperial) is 45 inches; value (metric) is 1.2 m; applies to is supported scaffolds manufactured or placed in service after January 1, 2000, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** toprail-maximum-height-supported-after-2000 _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(g)(4)(ii) _(our reading, not quoted from the source)_
- **Type of requirement:** maximum height _(our reading, not quoted from the source)_
- **Value (imperial):** 45 inches _(verified: appears in the quote below)_
- **Value (metric):** 1.2 m _(verified: appears in the quote below)_
- **Applies to:** supported scaffolds manufactured or placed in service after January 1, 2000 _(verified: appears in the quote below)_
- **Regulation section heading:** Fall protection _(verified: appears in its own passage below)_

## What the source says

> (ii) The top edge height of toprails or equivalent member on supported scaffolds manufactured or placed in service after January 1, 2000 shall be installed between 38 inches (0.97 m) and 45 inches (1.2 m) above the platform surface.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Regulation section heading

> (g) Fall protection.

## Source

- https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1926/subpart-L/section-1926.451

Last verified: 2026-09-14. Review by: 2027-08-31.
Part of [Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)](https://referencesource.org/osha-scaffold-dimensional-tolerances/).