Diffuser kit for Edge Series “ZT” & “L” models – Insert by gently placing diffuser inside cap. Ensure diffuser is positioned straight to avoid damaging LEDs. – If the diffuser is too loose, place a 1mm or 1.5mm rubber spacer (included) over the recessed area around the edge of the diffuser. – To remove from AM models, hold clear plastic cap down with one hand, while gently twisting and pulling diffuser with the other hand.