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HVAC
Air Condition System 2×1″lsd,1.50m.long For Sag 400 Cfm Install On The Roof Slab Dn.to Nearest Drain Return Air Chamber (typ) 36″x14″rag With filter (typ) Dn. To Nearest Drain 8″x6″fag. With insect Screen 36″x14″rag With filter …