The Apex is a ceiling-suspension system that uses heavy-duty extruded aluminum to support diffusers, infill panels and light fixtures. The Apex is fully customizable to match the demanding and often crowded modern hospital and cleanroom ceiling layouts, while ensuring compliance with ASHRAE 170, FGI Guidelines for Design and Construction of Health Care Facilities and USP 797/800. A continuous gasket prevents contaminant migration between the ceiling plenum and occupied space, and the sterile white powder-coat finish is formulated to resist deterioration from cleanroom-grade cleaners and disinfectants.