Abatement Technologies-H2001 Poly Pad Filter 1In is a high-efficiency first-stage replacement pre-filter engineered for portable air scrubbers and negative air machines. Constructed with 1-inch synthetic poly pad media, this primary filtration layer effectively captures coarse airborne dust, lint, and gross particulate matter to safeguard downstream HEPA filters. Designed for optimal airflow and low initial resistance, it ensures consistent containment performance across demanding restoration, healthcare, and industrial air scrubbing applications.