8x10x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Monterey Neem Oil HydroMaster Digital testers make monitoring

HydroMaster Digital testers make monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on

Accurate dual-beam CO2 sensor

and 0 to 400 mg/L (ppm) for TDS

high quality construction

8x10x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Monterey Neem Oil HydroMaster Digital testers make monitoringNordic Pure Custom MERV 8 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