2×2 40w Dimmable LED GAYA Flat Panel 100v-277v available at Access Fixtures from $79.99. This high-efficiency LED flat panel light delivers up to 108 lumens per watt and is rated for 50,000 hours. Its super-thin profile (2.03″) and integrated driver make it a discreet way to light any indoor area with over 4,000 lumens. The 40w GAYA uses SMD2835 LED chips with an excellent CRI of 80+. The chips are hidden from view with an elegant, frosted polycarbonate lens.