AliTronics 36w Led Corn Bulb,Led Corn Light,E26 Medium Base,4500lumens,Replace 150-175W Metal Halide bulb,5000K,5 Years Warranty,Used in Warehouse/Post Top/Garden/Acorn/Highbay/Lowbay/Garage 70-80% energy saving,replace 150-175W metal halide bulb or high pressure sodium bulb(called HPS bulb),very bright.So you can keep your current lighting fixture,save your purchase cost and electrical power. Bulb size:diameter 3.66* Length 9.17inch. Pls check this size carefully and ensure it can be installed into your fixture. Samsung led chip,4500lumens,5 years warranty,360 degree beam angle and IP64 waterproof Can be used in enclosed fixture, pure 6063 Aluminum material - good heat dissipation. Installed in both indoor and outdoor lighting fixture,such as post top,high bay,acorn,parking lot,street light,garden,wall pack or garage