15x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack pots-and-containers This growing tent is reinforced

This growing tent is reinforced by its frame’s steel construction

KIND BASE 4-0-0 + 5% Calcium

allowing you to cover an area of 100 square meters in less than a minute

Made from the finest ingredients

Fits up to 15” work boot

15x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack pots-and-containers This growing tent is reinforcedNordic 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