# UL 1241 — Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

For UL 1241, laboratory is International Association of Plumbing and Mechanical Officials EGS (IAPMO); standard title is Junction Boxes for Swimming Pool Lighting Fixtures, verified against its source on 2026-08-10.

- **Laboratory:** International Association of Plumbing and Mechanical Officials EGS (IAPMO) _(verified: appears in the quote below)_
- **Standard number:** UL 1241 _(verified: appears in the quote below)_
- **Standard title:** Junction Boxes for Swimming Pool Lighting Fixtures _(verified: appears in the quote below)_

## What the source says

> UL 1241 | Junction Boxes for Swimming Pool Lighting Fixtures |

## Source

- https://www.osha.gov/nationally-recognized-testing-laboratory-program/iapmo

Last verified: 2026-08-10. Review by: 2026-12-08.
Part of [Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced](https://referencesource.org/nrtl-recognition-scopes/).