True Blue Fiberglass FPR 1 Air Filter is designed to help reduce dirt buildup in air ducts， air conditioners and furnace systems. The frame is cardboard. Last up to 30-days.
Filter performance rating (FPR) of 1
Fiberglass filter design
Lasts up to 30 days
Filters dust and pollen
Helps reduce dust and dirt buildup in air ducts， air conditioners and furnace systems
Cardboard frame material
Recommended drain: K-7272 or K-7271
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