Purair SKY ceiling-mounted filtration units (photo) are designed to protect laboratory personnel and the environment in areas where hazardous substances are handled. These units feature a dynamic-filtration chamber with a sliding filter clamp that allows for simple, quick filter changes. Units come with an epoxy-coated steel support frame with LED lighting and wall-mounted controls. An electrostatic pre-filter helps trap additional contaminants and increase filter life. Central to the design of the Purair SKY Series is the Multiplex Filtration System developed to ensure universal protection in the work environment. — Air Science, Fort Myers, Fla.