Aprilaire - 213 air filters are designed for high performance and contaminant trapping ability. They fit the Aprilaire model 4200, model 3210, model 2210 and model 1210 Air Purifiers. If you added the upgrade kit 1213 to your Aprilaire model 2200 or model 2120, you can also use the Aprilaire 213 air filters.
High efficiency MERV 13 rating
Change Aprilaire 213 air filters once a year
If you own an Aprilaire 3210 Air Purifier, your event-based controller can also indicate when it's time to change your Aprilaire 213 Air Filter.