Filter King Carbon 16x20x5 3-Pack Air Filter. Our 16x20x5 Furnace Filters are designed to last up to 90 days. These pleated 5-inch air filters are ideal for maintaining the efficiency of your heating and cooling systems. Make sure you measure your filter. FILTER: This is a Carbon rated 3 pack Air Conditioner Filter MADE IN USA: Fully manufactured in the United States. Made from the highest quality materials and construction. (EPA Establishment Number: 103501-FL-1) MAX PERFORMANCE: Our filters can last up to 90 DAYS before needing replacement. We do recommend to change your home air filter every 30 - 90 days for 1 inch filters. This will help maintain the longevity of the intended application like A/C and heaters CAPTURE MORE: Protect your home! The pleated design captures more particles and extends lifetime of the filter. Merv Filters trap airborne particles without impacting air flow. Feel the difference in 48 hours. FAST & EASY INSTALLATION: Open, Slide and Close! A simple yet effective replacement air filter for your home. Brand Name Filter King Unit Count 3.0 Count Manufacturer Filter King Number of Items 3 Compatible Devices Air Conditioner, Furnace Item Dimensions L x W x Thickness 20 L x 16 W x 4.25 Th Global Trade Identification Number 00645637878310