High Bay 16" Acrylic OPEN, 250W HPS S50 (Lamp included), 120/208/240/277V 60Hz, by Howard Lighting HAC16O-250-HPS-4T

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Fixture Cross Reference - for reference only, not a guarantee of compatibility.
RUUD Lighting P/N: AP2525-M
Crescent/Stonco P/N: MBG16250LX-8
Simkar/CEW P/N: JLS0525-M
Atlas P/N: SU1625HQ
DuraGuard P/N: D-250-HPS-ACHB16-MT