The RAB Lighting HIDFA-20S-H-EX39-8CCT-BYP is a 5/10/20W field-selectable LED HID replacement lamp with a horizontal EX39 mogul base for ballast-bypass retrofit applications on 100277V universal voltage. It delivers 800/1600/3200 lumens with selectable CCT (3000K/4000K/5000K), CRI80, and up to 160 lm/W efficacy, designed specifically for horizontal burning positions in post top and area luminaires. Constant current driver, clear finish, and a 50,000-hour rated life minimize replacement frequency across outdoor and industrial installations.