Glasfloss ZL Series Air Filter

These filters are designed to be replaced every three months to maintain optimal airflow and air quality. Depending on your home's environment—such as the presence of pets or high dust levels—you may want to check them sooner to ensure they aren't clogged.

No, these are disposable filters. Once they reach the end of their three-month lifespan, they should be replaced with a fresh filter to ensure your HVAC system continues to run efficiently.

A MERV 10 filter provides a higher level of filtration than a standard MERV 8, meaning it is more effective at capturing smaller particles like pollen, mold spores, and fine dust. It offers a noticeable improvement in air quality without significantly restricting the airflow of your HVAC system.

These filters have an actual size of 19-7/8 x 21-1/2 x 1 inches, which corresponds to a nominal size of 20 x 22 x 1 inches. Always measure your current filter or the filter slot in your HVAC unit to ensure these dimensions are a match before purchasing.

Yes, these filters are constructed with a moisture-resistant frame and synthetic media that actively resists mold growth. This makes them a reliable choice for environments where humidity might otherwise compromise the integrity of a standard cardboard-framed filter.