The Sofiton 1 x 4 flat panel flush mount ceiling light features 120/277-Volt compatibility, 3-power options, and 120LM/W high efficiency to cut energy costs. It supports smooth 0-10V/triac dimming and 3CCT color tuning, with a tool-free slim surface mount design and included bracket for quick, low-cost installation and a clean flush ceiling look. With a durable aluminum frame, dustproof and anti-yellowing construction, it delivers uniform soft light, great heat dissipation, and 50,000+ hours of lifespan. UL and FCC certified, this 1 ft. x 4 ft. low profile surface mount LED panel fits most commercial and residential spaces and comes with hassle-free direct replacement warranty service.