45W Dimmable LED Retrofit Lamp for replacing HID lamps up to 175W 120 - 277 Volt, E39 base, Approved by UL for enclosed fixtures, External driver with multiple dimming options, IP65 lamp and driver, UL1993 certified and UL1598C classified for USA and Canada. Note: UL1598C keeps UL approval for fixture after ballast is removed and replaced with external LED driver. Available in Daylight (5700K), or Cool White (4200K).