22x23x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack light-movers-hangers Active Air fans are quiet

Active Air fans are quiet running

Concentrated potassium silicate will react with other elements

* Ideal for guiding and supporting plants during the flowering/bloom stage of life

Maxicrop Liquid Fish provides key nutrients for indoor and outdoor plants

• Smell-proof material

22x23x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack light-movers-hangers Active Air fans are quietNordic Pure Custom MERV 7 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