The Halo RL4 series is a retrofit LED baffle-trim module for 4 in. aperture recessed downlights. The RL4 is designed for use with compatible 4 in. housings. The RL4 integral LED driver is dimmable at 120 volts. The RL4 lens provides uniform illumination and wet location listing. Precision construction makes any housing air-tite for added HVAC savings and code compliance.