... (600mm*600mm)Net Weight4000 gLifespan40000 HWarranty2 yearsFeatures:1. Advanced constant current driver.2. Professional thermal management.3. Instant on, no warm up ... ,9W,10W,12W,15W,16W,18W,20W,24W,30W,40W,60W led ceiling lights.If you want to know more about ...