Absolute filter box in galvanized sheet steel sp. 10 mm with epoxy paint.
Tightness frame absolute filter fixing (CPFS).
Circular connection with side or top (CPFT) with damper operated from the front of the box with filter mounted.
Perforated diffuser in galvanized sheet, painted RAL 9010, standard laminar flow CPFT (4-way request).
Connection for differential pressure measurement of the filter both laterally or from the front of the box without removing the filter; with filter FAL 3 class H13 or FAL 4 class H14.