White-Rodgers F825-0431 Pre-Filter provided the physical footprint and

provided the physical footprint and mounting configuration align with your housing

this part is compatible only with units manufactured before date code 9923

Can this tube be used in ducts larger than 24 inches

As a direct 21-841 diaphragm replacement

White-Rodgers F825-0431 Pre-Filter provided the physical footprint andThe White Rodgers F825 0431 Pre Filter is a critical replacement component for SST 10 and SRP 12 series electronic air cleaners. This aluminum mesh filter is engineered to capture large airborne particulates before they reach the primary collection cells, preventing excessive loading and maintaining high MERV equivalent performance. By protecting the ionizing wires and collector plates from heavy debris, this pre filter ensures the electrostatic