The MaxLite 18 Watt A21 LED Filament Post Top Light Bulb (Part # EF18A21-40-E26; also available as 113431 in 4000K and 113432 in 5000K) is a high-performance HID retrofit lamp built around innovative high-power LED filament technology in a full glass A21 envelope with an E26 base. Rated for 120–277V operation, it delivers 2,605 lumens at an exceptional 145 lumens per watt, with a wide 300° light distribution that replicates the output of traditional HID sources.
This bulb is dimmable via Triac dimming from 10–100%, features a CRI of 80, 1KV surge protection, and is available in 4000K Cool White or 5000K Daylight to suit a variety of indoor and outdoor commercial and industrial applications. With a rated lifespan of 50,000 hours and compatibility with A21 (E26 base), ED28 (E26 base), and ED37 (EX39 base) form factors, this lamp makes retrofitting straightforward and reliable. It is cETLus listed, FCC and RoHS compliant, and backed by a 5-year warranty. Enclosed rating. Use for retrofit surface mount, Type IC or Non-IC recessed mount listed HID luminaires. See the Specification Sheet for Compatible Dimmers.
