Secondary reflection design,high light output reaching 95%,V-shape grid,paracurve arc reflector,T8/T5 luminous tube ... , etc.Features:Light body with 0.6mm high strength steel plates, wide spray, corrosion, oxidationCeiling with ceiling intact rectangular chassis ... series, or optional emergency unitInstallation, A, B-type ceiling surface mounted, C-type concealed gypsum boardFixed mode: hanging ...