5 pack Universal IR Emitter Covers for Infrared Resources Emitters and other brands Effectively blocks stray IR signals and noise. Easy to mount and keeps the emitters from falling off. Extra strong 3M adhesive for maximum securement Also fits Sonance, Calrad, NextGen, Global Cach, Sewell, TNP, Betige, and other similar Infrared Emitters Emitter size should be 1/2 x3/8x1/4 in tall or less