21-1/2 x 23-1/2 x 1 Merv 13 Universal Air Filter By Tier1 (6-Pack) MAP_Pricing and is also advised for

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

compared to similar RO filters

Made with 100% pure polypropylene

Axeon's HF4 series of membranes

this filter will help provide cleaner indoor air and a relief for allergy symptoms

21-1/2 x 23-1/2 x 1 Merv 13 Universal Air Filter By Tier1 (6-Pack) MAP_Pricing and is also advised forOur 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