Check the listing for details. Filter King 20x25x4 Air Filter 4-PACK MERV 8 Actual Size 19.5 x 24.5 x 3.75". Condition: New. Listed at 59.99 USD. FILTER: This is a MERV 8 rated 4 pack Air Conditioner Filter | Size: 20" x 25" x 4" - Actual Size: 19.5" x 24.5" x 3.75" | 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.