The SupremeAir Pre-Filter with Elastic Band is designed to provide the first line of defense for your carbon filtration system. Specifically sized at 8" x 39", this high-quality pre-filter captures large airborne particles—such as dust, lint, and pollen—preventing them from clogging the activated carbon inside your main filter.

By filtering out these contaminants before they reach the carbon bed, it significantly extends the lifespan and maintains the odor-scrubbing efficiency of your ventilation system.