3 Pack 16x25 Replacement Filter Pads Designed to Fit with PremierOne Pure Flo P6100 MS-1625 Air Cleaner 16x25 Refill Actual Filter Size 14.5"xx22.5" Manufactured in the USA ensuring quality and reliable performance. Replace Every 1 to 4 Months: Depending Local air quality for optimal performance The products advertised on this page are manufactured by Fast Shipped Filters. Fast Shipped Filters is a family-owned business in Swanton, Ohio that has been in the Heating Cooling & Air Purification industry since 1984 3 Pack 16x25 Replacement Filter Pads Designed to Fit with PremierOne Pure Flo P6100 MS-1625 Air Cleaner 16x25 Refill