036-21216-003-A-020420 Unitary Products GroupDuct covers - units are shipped with all air duct openings cov-ered.For side duct applications:• Remove and discard the supply and return air ductcovers.• Connect ductwork to duct flanges on the rear of the unit.For bottom duct applications:• remove the side supply air duct cover to gain access tothe bottom supply air knockout panel.• Remove and discard the bottom knockout panel.• Replace the side duct cover.• With filter section access panel removed from the unit,remove and discard the bottom return air knockoutpanel.• Replace the filter Access panel.FIGURE 10 - REAR DIMENSIONS OF DHE AND DHG UNITS 3, 4 & 5 TON UNITS