... available 2.Transparent acrylic cover 3.Dust proof,easy maintaing Ceiling mounted lighting fixture T8MX-Y20*3/SD01, MX-Y20*2 ... and hummingHave a good sealing and beautiful shapeWidely used in cleanroom, house, hospital, hotal, workshop, etcISO9001-2000, GB7000, CCC, ROHS ... /SD0140w*31287315658MX-Y40*2/SD0140w*21287230659MX-Y40*1/SD0140w*1128719565 cleanroom Ceiling Mounted Lighting Fixture T8