Ultravation 91-013 20x20x5 MERV 11 Filter 4-Pack

This 4-pack of genuine Ultravation 91-013 filters delivers MERV 11 filtration performance for your air handling system. Each five-inch progressive media filter captures dust, pollen, and airborne particles while maintaining optimal airflow. With actual dimensions of 19½ x 20⅝ x 4⅞", these factory-original replacements typically last six months under normal conditions—though dusty environments may require more frequent changes. Stock up with this convenient 4-pack to ensure consistent air quality throughout the year without interruption to your filtration schedule.

• Part # 91-013
• Fits Air Cleaner Models 92-031, 92-032, 92-033, 92-121, 92-122, 92-123, 90-016