Our operating theatre - air inlet screens prevent entry of germs, bacteria and pathogenic organisms into the body during operation. This is achieved by means of low turbulence displacement flow (LTF). Technical description: ? for external or circulation mode of operation ? equipped with HEPA - filter ? air flow velocity: 0.25 - 0.35 m/s ? execution with horizontal or vertical filter arrangement ? housings in round, octagonal, rectangular and square shape Features: ? smooth surfaces for easy desinfection ? frame covered with fabric from both sides ? integrated background illumination ? low initial filter pressure ? optionally with airtight shut-off damper