Free form lenses, for COB LEDs, nine to 23mm LES, eight beam angles. Made of Ultra-Clear Silicone (LSR). Excellent transparency, high optical clarity, long term durability. No need for extra protection. Engineered for Street/High-Bay/Area Lighting, Outdoor/Indoor, SIO3 Junior Lenses are in great demand in horticulture, greenhouses and urban vertical farming applications. The lenses allow immediate switching from conventional lighting to SSL, and can be easily installed in existing fixtures. Temperature resistant from –40-degrees Celsius to 200-degrees Celsius, they are UV-resistant, with a non-yellowing effect, and designed to comply with IP65 and IK10 ratings.