18.5x21x1 Pleated Filter

Model: # 18-1/2-21-1

About this item

• 18 1/2x21x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 18 1/2x21x1 inches)
• MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from dust, pollen, and more by trapping 90% of airborne particles without impacting airflow
• High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the lifespan of the product by 3 times that of fiberglass models
• Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs