FTF NONRIGID BAGS FILTEROVERVIEW - TECHNICAL CHARACTERISTICS HIGH EFFICENCY FILTERS OVERVIEW : FTF series nonrigid bags filter are used for filtering fine dusts in air treatment units and for HVAC plants for buildings, hotels, laboratories, hospitals, call centers, data processing and computer centers. Often they are mounted for pre-filtering before absolute filters FILTER MEDIA : made of high efficency polyester fiber. FRAME : made of galvanized steel . OPERATIVE TEMPERATURE : + 800 ° C. HEIGHT FILTERING ELEMENT: 535 - 636 mm. Q nominal air flow AP initial pressure drop Em % sof particles 0,4 pm