ACCESSORIESDISCHARGE DUCT ADAPTERDischarge duct adapters are available for applications where ducted evaporatordischarge is required. The adapters can be easily installed on the unit without fasteners,and can be used for either vertical or horizontal ducting. The standard discharge grille isremoved and the 2DDA is attached in the grille opening.2DDA-6 for model 2OACH12, converts the evaporator discharge to a 6-inchdiameter round duct.2DDA-10 for models 2OACH18 and 2OACH24, converts the evaporatordischarge to a 10-inch diameter round duct.2DDA-16 for models 2OACH36 AND 2OACH60, converts the evaporatordischarge to a 16-inch round duct.When used in conjunction with the evaporator return air plenum, the unit can provide aclosed-loop cooling solution for a given space without the influence of any outside air.AdapterModelRoundDuctSize2OACH12 2OACH18 2OACH24 2OACH36 2OACH602DDA-6 6-inch ✓2DDA-10 10-inch ✓ ✓2DDA-16 16-inch ✓ ✓MaximumApprox.Equivalent Feet25 50 50 50 100MaximumE.S.P .15 .25 .25 .25 .5015