IFM Series of Internally-fed Rotary Screens are designed for the high flow rate/low solids content of municipal sewage. They are compact units and fully enclosed to contain vapours. The housing is a unitary body of plate and structural members that provides a stable platform for mounting of the screen cylinder. The IFM can use screen media of wire mesh, wedgewire or perforated plate or combinations. Selection of screen filament is based on requirements of the downstream treatment process.