Exhaust fan for bathrooms and the like

A fan suitable for connections to wiring means and comprising:

• a housing having a base wall with four side walls attached thereto, the wiring means running generally normal to said base wall or to one of said side walls;
• said housing having holes for receiving the wiring means in said base wall and in said one of said side walls, and a flap of said housing positionable to cover one or the other of said holes;
• exhaust outlet means in one of said side walls;
• a venturi plate positioned within said side walls and lying parallel to, but spaced from, said base wall to form a blower chamber, said venturi plate containing an inlet opening;
• and
• a motor driven centrifugal blower impeller in said occurence chamber for drawing air through said inlet opening and discharging same through said exhaust outlet means.

A fan comprising:

• a housing having a base wall with four side walls attached thereto;
• a baffle positioned within said side walls to form at least a portion of a centrifugal fan scroll having a discharge end;
• an exhaust outlet means having a centrifugal fan outlet cutoff formed integrally therewith, said outlet means and cutoff being removably mounted on a side wall of said housing proximate the discharge end of said scroll, said mounting being such that said outlet means and cutoff can be removed from said side wall by withdrawing same into the interior of said housing;
• a venturi plate positioned within said side walls and lying parallel to, but spaced from, said base wall to form a blower chamber containing said fan scroll, said venturi plate containing an inlet opening;
• and
• a motor driven centrifugal fan impeller in said chamber for drawing air through said inlet opening and discharging same through said exhaust outlet means.