Pre-filters capture particles upstream of the HEPA filter in compatible negative air machines and air scrubbers. Spycor.com offers NC Filtration first-stage pads and second-stage ring panels, Mintie PAB2000 stage-two ring filters, HepaCart prefilters, and model-specific spark-arresting prefilters.
Remediation contractors and facility maintenance teams can compare machine compatibility, filter dimensions, installation stage, and pack quantity. Follow the equipment manufacturer's replacement guidance and confirm the specified filter before ordering, this category includes both first-stage and second-stage products.