10x20x2 Pleated MERV 8 Air Filters 12 Pack PH/EC/TDS Meters and Solutions Replaceable pH Electrode - The

Replaceable pH Electrode - The HI1271 supplied gel filled pH electrode is 103 mm long and tapers to an 8 mm diameter at the sensing end

always keeping the lights working in the best condition

UL 1598 Wet Location

You can tell at a glance what operating mode the unit is in: normal (green) or defrost (blue)

The LCD screen has stability and calibration tag indicators

10x20x2 Pleated MERV 8 Air Filters 12 Pack PH/EC/TDS Meters and Solutions Replaceable pH Electrode - TheNordic 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