13x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Controller Orders placed after 8 AM

Orders placed after 8 AM will ship Tuesday of the following week

Avoid temperatures of 90F / 32C or above to prevent seed dormancy

High purity water applications

No irrigation line clogging

Our pot saucers are so durable that they are intended to be used again-and-again for seasons to come

13x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Controller Orders placed after 8 AMNordic Pure Custom MERV 12 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