1) 0.6mm white-painted sheet steel housing2) Rust treated and rust proof for 8 - 10 years under normal application3) M2 double parabolic matt-anodized aluminum reflector or G2 mirror-anodized aluminum4) High-efficient electronic ballast, with power factor of 0.95 or up and 3 yearswarranty5) 10 years of use without light color change6)3x 14W