12x15x1 MERV 8 AC Furnace Filters 6 Pack Grow1 5' Steel Stake Automated sunrise/sunset

Automated sunrise/sunset

Amperometric EC/TDS Sensor

Handle: Non-slip

process pH glass electrode (platinum for ORP) which is compared to a reference electrode in KCL solution

12x15x1 MERV 8 AC Furnace Filters 6 Pack Grow1 5' Steel Stake Automated sunrise/sunsetNordic Pure MERV 8 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 and other contaminants are removed. MERV 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters