The 6 inch clip-on fan has impact resistant plastic grills with chemical resistant polypropylene blade, 2-speed and 1/300 HP motor. One year warranty. The 12 inch Wall Mount fan has a powder coated steel front grill with impact resistant plastic rear grill and chemical resistant polypropylene blade, 3-speeds and a 1/50 HP motor. It oscillates 90° or can be locked in a non-oscillating position. One year warranty. The 16 inch Wall Mount fan has a powder coated steel front grill with impact resistant plastic rear grill and chemical resistant polypropylene blade, 3-speeds and a 1/20 HP motor. It oscillates 90° or can be locked in a non-oscillating position. One year warranty. The 18 inch Wall Mount fan has a powder coated steel front grill with impact resistant plastic rear grill and chemical resistant polypropylene blade, 3-speeds and a 1/20 HP motor. It oscillates 90° or can be locked in a non-oscillating position. One year warranty.