17_1/2x23_1/2x1 MERV 8 AC Furnace Filters 6 Pack Air Purification CAL CHECKTM allows the user

CAL CHECKTM allows the user to easily check the pH probe calibration status at any time

Comes with a Centurion Silencer which reduces dust collector noise by up to 50%

Hydrofarm's Upstart Garden Mat™ couldn't be simpler to use-just roll the mat out on your prepared patch

Magnesium (Mg)……………0

2953A@AC240V

17_1/2x23_1/2x1 MERV 8 AC Furnace Filters 6 Pack Air Purification CAL CHECKTM allows the userNordic 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