The 12 in. and 16 in. Wall-Mount Fans are real problem-solvers. They can be quickly installed with the included mounting hardware and they can be controlled by either the rotary knob or the three-way pull cord making higher installations practical. Three Whisper-Quiet Speeds with Optional Oscillation. 3-Prong Grounded Plug. Durable Impact-Resistant Plastic Construction. Easy to Assemble No Tools Required. U.L. Listed.