30x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack plant-support Output power can be fine-tuned

Output power can be fine-tuned from 600W up to 1150W in 1% increments

VEG and BLOOM switches can be used together to obtain maximum growth performance throughout the seeding and flowering stages of your plant life

Made from high-quality hard plastic and built to last

The yellow LED indicator shows CO2 level equal or above 800ppm which means supplemental CO2 is in use

choose Arize Greenhouse Pro LED lamp to control and create ideal growth conditions

30x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack plant-support Output power can be fine-tunedNordic 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