17_1/8x34_7/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning Magnum with Vitamin B1 is

Magnum with Vitamin B1 is a potent magnesium supplement for preventing or treating the magnesium deficiency that often appears during bloom

Designed to harvest the most delicate of tree fruit

Power Plant is environmentally friendly

Developed for extreme quality water

Implement this pathogen-free media to your potting soil or in place of bark as an attractive and all-natural ground cover

17_1/8x34_7/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning Magnum with Vitamin B1 isNordic 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