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Exceptional lifetime: 40,000 hour life means bulb replacements will be few and far between.
Extra bright: 10,000 lumens will light a large area in a farm yard, parking lot, or shop.
ANSI Code S54.
Must match bulb to ballast in fixture.
EX39 Exclusionary Mogul base.
The most common applications for the Sylvania 400-Watt BT37 HID Light Bulb are atriums, flood lighting, industrial lighting, commercial lighting, retail lighting, lobbies, parking lots, security lighting and shopping malls. This light bulb has a CRI of 65.