12x27x1 Exact MERV 12 AC Furnace Filters 6 Pack Liquid & Weight Measuring the monitor is simple to

the monitor is simple to install and can be placed above the sample to be tested

VLGR TECHNOLOGY delivers the smoothest environmental control and strongest VPD performance by utilizing a proprietary variable speed refrigeration system

There are holes on the side to allow bamboo sticks for stabilization

Nordic Pure chose to follow the industry standard

12x27x1 Exact MERV 12 AC Furnace Filters 6 Pack Liquid & Weight Measuring the monitor is simple toNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different