17_1/4x23_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack nutrient-combo Using Elite 91 FLOWERS throughout

Using Elite 91 FLOWERS throughout the flowering phase can produce larger fruit and flower setting with higher brix levels

Great for commercial or residential use

and penetrate deeper into the canopy without being obstructed by the lamp itself

meaning that it will boost the signals passing through the SPH-1 allowing more modules

4 dBA) from the cabinet interior

17_1/4x23_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack nutrient-combo Using Elite 91 FLOWERS throughoutNordic 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