... /LED lamp 3.5 "Recessed slot trim 50W Max. MR16,lampholder 3.5 " Recessed incandescent slot trim-Ring: WH-Lamp:50W ... following products with cULus or cETLus:A. 3",3.5",4", 5",6" and 8",9" Recessed Housing & Trims.B. Track ... 8180 8685 3.5 "Recessed slot trim 50W Max. MR16,lampholder