14x18x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Plant Support Used as a foliar spray

Used as a foliar spray or as a growth catalyst for hydroponic or soil crops

Botanicare Bulkhead Kit w/2 Extensions

Grodan comes in graduated sizes

flicker-free performance that will be good for your plants for years to come

14x18x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Plant Support Used as a foliar sprayNordic Pure Custom MERV 7 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