2 Pack 313 Air Filter 20x20x4 MERV 13 for Aprilaire 1310/2310/33

Condition: Brand new. Price: $40 firm. Pickup: South Ajax. If the ad is up, it’s available. About Item Wide Compatibility – Designed as a replacement for AprilAire 313 filters and works with AprilAire 1310, 2310, 3310, and 4300 whole house air purifiers. Always check your model before ordering. Standard 20 x 20 x 4 Size – Nominal size fits systems designed for the 313 filter. Easy slide-in replacement for many AprilAire units. MERV 13 Filtration – Captures up to 97% of airborne particles such as dust, lint, pollen, pet dander, and other small contaminants down to 0.3 microns. Durable Filter Material – Made with lightweight synthetic fiber filter cotton designed for good airflow, low resistance, and long service life. Tool-Free Installation – Simple to replace with no tools required. Just remove the old filter and slide the new one into place. 2 Pack Convenience – Includes two replacement filters so you have a spare ready when it’s time to change the filter. Recommended Replacement Cycle – For best air quality, filters are typically replaced every 6–12 months depending on system use and home conditions.