Frame 
The frame is constructed of a lightweight but durable and strong aluminum alloy. 

Finned Tubing 
The cooling coil is constructed of  5/8" x 0.058" wall aluminum tubing for a primary surface with 5/8" x 0.020" aluminum fin acting as the secondary surface. The spirally-wound fin is mechanically joined to the knurled aluminum tube to ensure that positive contact is made between the primary and secondary surfaces. 

Electric Motors  
Electric Motors are totally enclosed air over and are modified to meet Malnar specifications. These specifications include changing to sealed bearings, "fling-ring" added to the shaft to prevent moisture from entering the motor, additional gaskets to be supplied between the motor body and the conduit box, and drain holes drilled into the bottom face of the motor. Motors can be supplied in 230/460 or 575V, 3 phase, 60 Hz at 850 RPM. 

Fans 
Direct drive axial fans are cast aluminum design. Axial fans circulate air at high volumes with minimum horsepower requirements. Lower speeds reduce the operating noise of the entire unit. 

Top Cap & Drain Pans 
The top cap and the drain pan are both constructed of fibreglass and finished in a brilliant white colour. The drain pan is insulated with 3/4 inch thick polyurethane, sandwiched by the fibreglass coating. The drain pan is also sloped to enable quick and complete drainage of the condensate.