21-1/2 x 23-1/2 x 1 Merv 13 Universal Air Filter By Tier1 (6-Pack) MAP_Pricing Axeon's HF4 series of membranes

Axeon's HF4 series of membranes

and 1 RO membrane cartridge that will last a combined last two years

and is also advised for homes that use well water due to the ability to combat viruses and bacteria that would make it past other filtering methods

Captures virtually all sediment five micron or larger and built with a graded density that helps it hang onto more dirt

and adhesive free

21-1/2 x 23-1/2 x 1 Merv 13 Universal Air Filter By Tier1 (6-Pack) MAP_Pricing Axeon's HF4 series of membranesOur Tier1 21 1 2 x 23 1 2 x 1 Air Filter MERV 13 comes in a 6 Pack. These pleated high capacity filters are constructed using electrostatically charged filter media. This 100% synthetic material offers significantly higher particulate efficiency than typical poly cotton media pleated filters, and captures the smallest and most troublesome airborne particles and allergens, such as particles that carry viruses and bacteria, pollen, mold spores, fine