... , width:1150mm, tongue and groove structure, 0.426mm color steel with polystyrene inside, color: whiteLightingCeiling lights: 12Unitsx4Pcs=48Pcsx36W, Side lights: 8Unitsx4Pcs=32Pcsx36W ... direction, quadrate steel frame, outside is white coatedsteel, inside is galvanized steel.Intake and exhaust air systems 3 units1 ... ?450LUXFree air speed?0.25m/sTotal power29.5KWOption color: blue, orange and white.