17_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Reflectors In field applications

In field applications

Minimal stretching

Optimized full spectrum lamp outputs 580 μmol/s (PPF 400–700nm)

This species of beneficial nematode actively seeks out grubs in the soil and spreads the Milky Spore as they do so

17_1/2x23_1/2x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Reflectors In field applicationsNordic 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