18x36x1 Merv 8 Universal Air Filter By Tier1 (6-Pack) Pool and Spa Filters the O-ring helps to reduce

the O-ring helps to reduce risk of leakage in your housing while the food grade O-ring silicone lubricant preserves the integrity of your O-ring

it installs with an easy 1/4 twist to remove the old and replace with the new

Fast & Convenient - quicker and safer than alternative sanitizers

and the removal of chlorine

18x36x1 Merv 8 Universal Air Filter By Tier1 (6-Pack) Pool and Spa Filters the O-ring helps to reduceOur Tier1 MERV 8 are pleated high capacity filters constructed with 100% synthetic material. This 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 dust and pet dander. The combination of high efficiency, allergen reduction, and low cost