Patent ID: 8096144

Claim:
A supply air terminal unit comprising: a body having side walls, a top wall, a bottom wall, and an interior space, and portions of the side walls forming inlet ports which allow air to flow in to the interior space; an opening cover mounted to the body which is openable to allow access for service work into the interior space; an air outlet port located in the body bottom wall; a central fine filter mounted to cover the outlet port; a pre-filter wall formed by a plurality of needle-fin tubes, wherein the needle-fin tubes are placed on top of each other to form a filter wall and wherein each needle-fin tube has needle fins around a central tube, the pre-filter wall positioned in the interior space of the body, and surrounding the central fine filter so that air entering the inlet ports first passes through the pre-filter wall then through the central fine filter then through the outlet port; and wherein the central tube of each needle-fin tube is connected to a source of fluid heat carrier.