22x23x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack flowering nutrients Extra oxygen stimulates protein production

Extra oxygen stimulates protein production at the cellular level in your plants

The HI1285-7 is designed for use with Hanna's HI9814 portable multiparameter meter

Black Sigatoka (Mycosphaerella fijiensis)

Broad Crop Compatibility – Labeled for use on vegetables

Reduces filter changes to every 7

22x23x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack flowering nutrients Extra oxygen stimulates protein productionNordic 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