8x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Pots and Containers QPlugs provide more air porosity

QPlugs provide more air porosity for better roots and provide more water control than anything else on the market

Contains: 1 Grow (200gr)

hot lamp startup protection

cyhexatin and chlorpyrifos

Sunshine Perlite is a porous

8x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Pots and Containers QPlugs provide more air porosityNordic 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