13x23x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack reflective-and-greenhouse-films When used properly in combination

When used properly in combination with the full Elite Nutrient regimen

Mixed flow design combined with a PWM-controlled EC motor for a truly quiet and energy efficient performance

four temperature probes

Model 5790 duct kit for the A210V1 has an equivalent inlet opening to 16” round and 17” round on the outlet side

Product Highlights No Krypton-85 for safety and environmental-friendly operation

13x23x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack reflective-and-greenhouse-films When used properly in combinationNordic Pure Custom MERV 10 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition