Perfect Compatibility: This 313 replacement air filter is designed specifically compatible with AprilAire Whole House Air Purifier Models, including 310 1310, 2310, 3310, 4300. Please ensure to check your model number before placing an order
MERV RATING 13: These HVAC filters feature Merv 13 filtration material, capable of filtering 90% of 3-10μm particles, 85% of 1-3μm particles and 50% of 0.3-1μm particles
FOR OPTIMAL PERFORMANCE: The primary cause of filtration inefficiency is clogging of the filters. To ensure optimal performance, it is recommended to replace the filter every 10-12 months, depending on the quality of the air and frequency of use
EASY INSTALLATION: Designed for hassle-free setup, this 113 replacement filter slides into place effortlessly, saving you time and effort
Industry-Standard Nominal Size: 20" x 20" x 4". (Note: Nominal size is an industry-standard measurement system designed to help you quickly identify the correct replacement filter. It is not the exact physical dimensions of the filter)
