Accessory code X361 Elliptical filter 30°x56 ° for spot optic 12° - L=591 X361: Elliptical filter 30°x56 ° for spot optic 12° - L=591 Technical description: Elliptical filter long L=591mm for a spot optic. Made of PMMA. Colour: Clear transparent (24) Weight (Kg): 0.04