... 25cm, 30cm, 35cm, 40cm, 45cm Features:-Commercial and residential Lighting:ideal for office,exhibition room,supermarket,school, ... ,low heat.-Mounting Method:ceiling mounting. sizeround or squareweight4.5 (different size different weight)full ... , green, purple, white, warm white, yellow or remote control colorcolor temperature2500k-8500kIlluminationabout 2400luxuniformity power<=48woperating temperature ...