1.With 0.5" thickness ONLY & Built-in driver, this led downlight is much easier & elegant for false ceiling. 2.Easier to retrofit the traditional downlight with its special design.3.ETL & Energystar qualified.No doult that it is the best replacement for American lighting Market. The flexible installations and qualified certifications gived it a permit to get into.Details:5' / 7' / 9' / 12' available;PF>0.9,;CRI>80;Input Voltage: AC100-130V;Warranty: 3 Years;IP rate: IP44