8x8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack complete grow kit Ceramic Metal Halide or CMH

Ceramic Metal Halide or CMH for short (some refer to it as CDM)

Unique coiled support frame allows for expansion and contraction of the arc tube during operation

broad spectrum bactericide and fungicide created to protect medical and hemp throughout the growing cycle

tobacco budworms

• Full daylight spectrum 32 watt fluorescent grow bulb (150 watt equivalent)

8x8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack complete grow kit Ceramic Metal Halide or CMHNordic 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