Galvanized Steel Sheet 1.10mm. Thick Washer (gauge No.20) And With Sides Folding Under Duct Insulation Secured With All Steel Supports Shall Be Painted With 2 Coats Of Anti-rust Paint And 1 Coat Of Finished Coat …
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 …
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