23_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Terp Derp Heat-treated HSS with titanium nitride

Heat-treated HSS with titanium nitride coating

Perlite #3 features large coarse particles which maximize nutrient uptake

shelves are removable for taller plants

6 Liters (1

non-woven fabric offers breathability while also allowing moisture to escape so you stay cooler throughout long shifts

23_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Terp Derp Heat-treated HSS with titanium nitrideNordic 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