... 2.50000hrs,3year warranty 3.>83Lm/W,+ future upgrading 4.Industry,square,parking lot use LED HIGH BAY LIGHTAll LED High Bay Lights are in modular design, each made ... optics design ensures high luminous efficiency, 18W each and output >1620lm. 3. Housing --- Aluminum alloy, uniquely designed, flexible for 20W-280W 200W LED High Bay Light Datasheet