Most recent
ANSI C136.17-2005 (S2017)
Roadway and Area Lighting Equipment - Enclosed Side - Mounted Luminaires for Horizontal - Burning High-Intensity Discharge Lamps - Mechanical Interchangeability of Refractors
Covers the dimensional features and the materials of refractors as shown in this standard and as described in C136.14.
NEMA: National Electrical Manufacturers Association [nema]