... Φ110mm, Φ150mm, Φ180mm Cut Hole Φ95mm, Φ135mm, Φ165mm Surface Color white/black Shell Material Aluminum+aluminum alloy+ISB plastic Beam ... 90% R.H. Operating Temperature -25°C~55°C Color Rendering Index ≥75 Color Temperature 2800~3200K(warm white) 5800~6200K(cool white ... pcs)Showroom LED Ceiling Lamp Options:1.Available light housing color:white,black2.Available light source:warm white,neutral white, ...