17x19x1 Exact MERV 13 AC Furnace Filters 12 Pack Trimmers The relative humidity level is

The relative humidity level is displayed in bold on the digital screen for easy readings and quick adjustments

Safe to beneficial or large insects such as bees

Root Radiance seedling heat mat warms root area 10 to 20 degrees over ambient temperature

Tank's-Pro Potting Mix provides a ready-to-use growing medium suitable for most crops

optimized root growth

17x19x1 Exact MERV 13 AC Furnace Filters 12 Pack Trimmers The relative humidity level isNordic Pure MERV 13 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, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200