The 18" Mole Richardson fan is an interior 3 blade adjustable speed control wind machine designed to create wind effects from a slight breeze to a stiff wind with minimal noise. The Mole Richardson fan can disburse leaves, dust, artificial snowflakes and can move synthetic branches or shrubbery on set. Other uses include delivery, movement and removal of atmospheric fog, smoke or haze. A 24" Mole Richardson Fan is also available.