| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,GALVANIZED,20 GAUGE,FULLY WELDED; ONE RECTANGULAR END,ONE ROUND SLIP JOINT END; FOR USE IN CONNECTING ROUND SPIRAL TYPE LOW PRESSURE-LOW VELOCITY SHEET METAL DUCT TO RECTANGULAR HEATER OPENINGS AND DAMPERS; RECTANGULAR END 6 IN. BY 12 IN. ROUND END FOR 12 IN. DIA DUCT,MFG STD LG |