15x9x1 MERV 14 AC Furnace Filters 6 Pack Fertilizer PPM (700) and temperature• Premium

PPM (700) and temperature• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance• Titanium alloy sensor designed for high accuracy EC measurement• Easy-to-use design and fast calibration adjustment

Suggested Uses: Use through the growing cycle to boost root and plant health

under accelerated growing conditions

It’s long lasting

15x9x1 MERV 14 AC Furnace Filters 6 Pack Fertilizer PPM (700) and temperature• PremiumNordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.