22x24_1/4x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts 1-year warranty on probe• Compatible

1-year warranty on probe• Compatible with all Apera GroStar probes

brevibacillus

Included are Grow Natural and Bloom Natural

Iteratively designed with you in mind

humic acid and pure Yucca extract

22x24_1/4x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts 1-year warranty on probe• CompatibleNordic Pure Custom MERV 8 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