... 90lm/W 4,"D" shape aluminium housing 5, Pin type: T8- G13 6, PC Covers: Frosted ... -60HzLifespan50,000-80,000hItem Size(LXD)600X26x28mm Pin TypeT8-G13MaterialsAluminum housing and PC coverOperating Temperature- ... ,classroom etc.Lumen Depreciation:1% brightness decacy within 5000 hours5% brightess decay after3 years TEN ... . ReaLEDz LED tube lamp can be lit within a range of voltage, but also can adjust the ...