Burnham Boilers 81156013 SMI Air Filter.
- Solberg Heavy Paper Air Filter with Poly. Pre-Filter, up to 60 CFM
- Diameter with Foam: 8-3/4" +/-
- Outside Diameter without Foam: 7-3/4"
- Inside Diameter: 4-5/8"
- Width (Thickness): 4-3/4"
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