30x240x1 Hammock Roll PSF - HR30240P

Flanders Precisionaire PSF Polyester Hammock Roll Media is bulk filter media sold in roll form for cut-to-fit commercial and industrial HVAC applications. Cut the length you need and install into a standard holding frame or media rack — ideal for non-standard sizes, built-in housings, and high-volume replacement programs where buying roll stock costs less than individual panels. Polyester vs. spun glass — which roll fits your application? Polyester (PSF Poly) and spun glass hammock rolls cover the same MERV 1–4 pre-filter category but perform differently in service: Dust-holding capacity: Polyester typically holds more dust per square foot than spun glass, extending service intervals in dustier environments. Loft retention: Polyester fibers recover their loft better over time, maintaining airflow characteristics as the filter loads. Moisture and humidity: Polyester tolerates humid and damp airstreams better than spun glass, which can sag or compress in moisture-heavy applications. Initial airflow: Spun glass generally offers slightly lower initial resistance, which is why it remains common in high-velocity paint booth and exhaust applications. Cost: Spun glass roll stock is usually the lowest-cost option per square foot; polyester costs more upfront but often delivers longer service life. Choose polyester for humid environments, longer change intervals, or applications where loft retention matters. Choose spun glass for the lowest cost per change and high-velocity airflow. Typical applications Paint-booth intake and exhaust Commercial kitchen hood pre-filters Light industrial ventilation Custom-size commercial HVAC air handlers Agricultural, pet-boarding, and trade facility exhaust Humid or damp airstream applications where spun glass underperforms Specifications Media: Polyester hammock roll — cut-to-fit without fraying or shedding. Service life: Varies by application — replace when visibly loaded or when pressure drop increases. Format: Bulk roll — confirm width, length, and thickness by part number. Need a specific width, length, or thickness? Contact us with your dimensions and we'll confirm stock and pricing. Questions on fit, quantity, or a commercial quote? Need a size that isn't listed, a different pack count, or a quote for a commercial order? Get in touch — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.