K&N HVAC Air Filters are a pleated synthetic filter that provides outstanding filtration and dust holding capacity for your home HVAC system. K&N HVAC Air Filters are reusable; easily cleaned with a simple wash and will help protect the air you breathe within your home. Give your HVAC system long-term dependability and performance with HVAC air filters from K&N; dust, pollen, bacteria, spores, allergens, and other contaminants don't stand a chance!