... CrustAluminum +PC(Transparent,stripe,frosted)T8 LED Tube Light Base TypeG13LuminosityTransparent PC2150lm±5%Stripe PC2050m±5%Frosted PC1940lm±5 ... or LED can be seen from outside.2) Heat conductivity of aluminum base is 2.8, excellent heat dissipation, long life ... Tube Light Applications1) Bus, shuttle, railcar passenger interiors 2) Uninterrupted emergency lighting 3) Focused reading and Task lighting ...