Xtrasun XTSLENSYS 6-Inch Lens System for A/C Reflector for Plants Lens system for 6-inch a/c reflector Completely seal your xtrasun 6-inchair coolable reflector from your grow area Allow fast and efficient venting of bulb heat This products weighs is 5-pound Container's measures 20-3/5-inch length by 19-1/5-inch width by 1/2-inch height