In the world of high-efficiency air filtration, where performance is measured in fractions of a micron, the structural integrity of the filter is just as important as the media itself. This is the domain of the Separator Filter. This classic, robust design uses corrugated aluminum or paper separators between each pleat of the filter media, creating a rigid, stable pack that can withstand high pressure and turbulent airflow without fail. While newer designs exist, the deep-pleat Separator Filter remains the gold standard for the most demanding applications—from pharmaceutical cleanrooms to nuclear facilities—where absolute reliability and guaranteed performance are non-negotiable. At RZJ Clear Air, we are masters of this proven technology, engineering filters that deliver uncompromising air purity.