... /diffuserWith high quality magnetic or electronic ballast,noiseless,safe and long life span.Rapid start-up without flicker and hummingUsed ... in cleanroom,house,hospital,hotel,work shop,etcInstalled together wih air ... (MM)H(MM)L(MM)W(MM)1SD14E14WX3595 595 70 Built-in cleanroom lighting fixture SD14E