The range of ATA laminar air flow ceilings ensures ef¬ficient protection against contamination which can occur during invasive acts and caused by airborne dead or living particles. The ceilings are available in square, rectangular, octagonal or circular shapes in order to suit any room layout and answer specific requirements to create a clean zone around the patient, medical staff and medical devices. Our laminar flow ceilings are mainly used with our Clinicair Air Handling Unit, but can be also adapted to any type of products from a different brand. This system is dedicated to operating theatres in order to meet ISO 5 standard (complying with EN ISO 14644-1 ) as well as to pharmaceutical industry. It helps fight cross contamination and hospital borne infections. We have developed two ranges, in order to meet all country regulations: 90-351 Range: rectangular, square, octogonal ceilings (on demand) DIN 1946 Range:: rectangular, circular, octogonal ceilings