"Converter" accessory to match the Quadra Lite base lens code QL4XRHPC_12, to obtain an oval light beam of 15 ° x50 ° with 6 degree of asymmetry. The converter must be assembled with the striped surface facing the base lens and the prismatic surface outer. This converter is particularly suitable for obtaining a flat lighting with wall washer distribution. It is also suitable for RGBW lighting.