13x21.5x1 Furnace Filters

Breathe cleaner air with our premium 13x21.5x1 furnace filters. Available in MERV 8, 11, and 13 ratings to capture dust, allergens, and airborne particles. Our high-quality pleated filters provide superior filtration while maintaining proper airflow. Perfect for homeowners seeking reliable protection against indoor air pollutants without straining your HVAC system.