Advance IMH-39-G-LF - 39 Watt - Electronic Metal Halide Ballast ANSI M130 - 120/277 Volt - Power Factor 90% - Max. Temp. Rating 194 Deg. F - Side Leads With Mounting Feet BULB_TYP Its one lamp design is

Its one lamp design is 8” in diameter and uses a 1W (max) bulb

Maximum overall length is 11 inches

Bulbrite's lensed Halogen MR11 bulbs provide a more energy efficient alternative to Incandescent reflectors by providing UV protection and greater light output

Warm White 25-Watt

They are also UL Listed for use in damp locations

Advance IMH-39-G-LF - 39 Watt - Electronic Metal Halide Ballast ANSI M130 - 120/277 Volt - Power Factor 90% - Max. Temp. Rating 194 Deg. F - Side Leads With Mounting Feet BULB_TYP Its one lamp design isPhilips Advance e Vision electronic metal halide ballasts offer a powerful combination of bright light and energy efficiency. The Advance IMH 39 G LF 39 watt metal halide ballast includes Intellivolt multiple voltage technology to deliver consistent color rendering and longer life, making it an optimal choice for retail and commercial users. For easy installation, this ballast features side exit leads and mounting feet.