... style: Suspend mounted or recessed mounted 3) Magnetic or electronic ballast 4) Body: 0.2-0.4mm, frame: 0.35-0 ... ) 7) Spec.: 2x18/20W, 3x18/20W, 4x18/20W, 2x36/40W, 3x36/40W, 4x36/40W 8) Suitable for office, classroom, supermarket, restaurant, factory, house ...