Standards Publication

Recessed Luminaires, Ceiling Compatibility

NEMA LS 20020-2023 (Previously LE-4-2012 (R2018) | Status: Active | ID: 100138

This  standards  publication  contains  definitions,  dimensions , and tolerances  for recessed luminaires. designed to use fluorescent, high-intensity discharge and incandescent light sources.

Drawing examples show fluorescent (tubular) lamps.  However, these drawings also apply to luminaires with other light sources.  high intensity discharge, compact fluorescent, incandescent, and other lamp sources.

This standard does not apply to hard metric dimensioned products. However, soft metric dimensions or  direct  metric  conversions   may  be  applied  throughout  this  standard  as  one  inch  equals  25.4 millimeters.
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Published Date: February 29, 2024

Number of pages: 26

Staff Contact: David Richmond

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Keywords

NEMA LS 20020-2023, NEMA LS 20020, LE4 LE.4 LE-4 NEMA STANDARD RECESSED LUMINAIRES; CEILING COMPATIBILITY LE 4