15x23x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack grow-light-ballasts FULL HUMIDITY CONTROL – The

FULL HUMIDITY CONTROL – The two large top vents and two smaller side vents are adjustable and give you total control of the humidity levels in the plants’ environment

PPF - 2345 μmol/s

No messy bags

These parasites attack California red scale

This compact reflector design optimizes performance focusing more light on the plant canopy with superior uniform light distribution

15x23x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack grow-light-ballasts FULL HUMIDITY CONTROL – TheNordic Pure Custom MERV 10 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