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The PRO-SOURCE PRO56221 is a synthetic media bag air filter rated MERV 15, designed for commercial and industrial HVAC air handling units that demand high-efficiency particulate capture. With nominal dimensions of 24 inches high, 12 inches wide, and 18 inches deep, this 3-pocket bag filter achieves a particle capture efficiency of 90 to 95 percent across the MERV 15 target range. The galvanized steel integrated frame provides structural rigidity under airflow loads up to 500 feet per minute (FPM) and rated capacity of 1000 CFM. It handles operating temperatures up to 150 degrees F, making it suitable for demanding mechanical room environments. Licensed HVAC technicians and facilities maintenance professionals are the typical installers.
This filter is suited for commercial air handling units, rooftop units, and built-up systems where MERV 15 efficiency is specified by design engineers or required by indoor air quality standards. The 3-pocket bag configuration maximizes media surface area in a compact housing, supporting longer service intervals compared to flat-panel alternatives. Actual dimensions are 23.375 inches high, 11.375 inches wide, and 18 inches deep, so verify filter bank frame dimensions before ordering. It is commonly specified in hospitals, laboratories, clean rooms, and commercial office buildings where fine particulate and allergen control is a priority.
Designed as an OEM-style replacement bag filter for commercial HVAC air handling units and built-up systems accepting nominal 24x12x18 inch, 3-pocket bag filters.
Installation should be performed by a qualified HVAC technician. Always shut down and lock out the air handling unit before removing or installing filters. Verify actual filter bank frame dimensions against the actual dimensions of 23.375 x 11.375 x 18 inches to confirm proper fit and prevent bypass. Handle the filter media pockets carefully to avoid damage that could compromise filtration efficiency.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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