National Stock Number:
4140-99-300-0773
Federal Supply Class:
4140
National Item Identification Number:
993000773
Description:
FAN,VENTILATING
Detail:
A nonpositive displacement mechanical device having either an axial or centrifugal fan impeller. It is designed to move free air or gas from indoors to outdoors or vice versa over a wide range of volumes at low pressures. It is supported by a ring, plate, or shroud or may be inclosed in a housing. It is designed for installation in a window, roof or wall opening, or the like.
|