13x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack veg-and-bloom Refresh your reservoir every 1

Refresh your reservoir every 1 – 2 weeks

Fill the bag with contents

For ventilation applications

Kelvin Temp: 5400K

13x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack veg-and-bloom Refresh your reservoir every 1Nordic 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