Specification: 2*20w, 3*20w, 4*20w, 2*40w, 3*40w, 4*40w, 2*14w, 3*14w, 4*14w, 2*28w, etc. Material: low brightness aluminum, high quality aluminum Grille shape: I-shape, V-shape CBM: 64*39*21/4pcs 94.5*31*18/2pcs 125*39*21/4pcs 64*62.5*18/2pcs 70*34.5*16/2pcs 70*46*16/2pcs 132*46*16/2pcs 132*56.5*16/2pcs Stable, energy-saving, and long lifespan High reflective, be up to 85% at least. Body: Good quality cold-rolled steel plate, epoxy powder spraying Ballast: magnetic or electric ballasts Lamp Holder: PC flame retardant material Application: Suitable for office, meeting room, hospital hotels, bank, etc.