15x19x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Nutrients Utilizing twice the amount of

Utilizing twice the amount of photon flux output (2000 umol/s) than the GC-500w CMH lamp

They can live for up to one month as adults and lay up to 200 eggs in that period

a 120V wall outlet is required

THE GREEN PAD may be one of the most inexpensive and innovative ways to get the good gas to your plants

Maximize growth

15x19x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Nutrients Utilizing twice the amount ofNordic 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