This durable, PMMA, clear plastic lens is used to establish a 30-degree beam distribution. It easily snaps into the TE Standard Series Surface and Recessed mount channels, as well as the TE Enhanced Series 30-degree surface mount channel. With its audible click, it`s easy to confirm when the lens is properly installed throughout the channel. The clear diffuser provides protection for the LEDs within, while emitting light with little dilution.