22x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Hand Tools and shaping small plants to

and shaping small plants to improve their growth

Each layer of material is bonded to polyurethane for strength and durability and has a inner layer of insulation to prevent conductive heat flow

and iron plant supplement designed to correct common deficiencies or imbalances in both Vegetative and Flowering phases

and enhance quality in potting soil grown plants during the flowering stage of their life

and fungicides when applied at the recommended rates

22x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Hand Tools and shaping small plants toNordic 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