Brushed stainless steel housing. Chain or Cable suspension mounting. On/off switch is standard. Shipping weight for 18" version is 10 lbs./ 4.5 kg. Weight for 36" version is 16 lbs./ 7.3 kg. Minimum ceiling height is 9' and units must be mounted a minimum of 7' above the floor. 120 through 277 V AC 50/60 Hz operation. Class P, HPF, CBM certified ballasts comply with Federal Ballast Law (Public Law 100-357, 1988).