14x18x1 Exact MERV 13 AC Furnace Filters 12 Pack spl_hf - Protects plants by turning

- Protects plants by turning off lighting or CO2 generators when temperature is too high

seed starting trays

The Save A Drop Water Timer gives you the capability to determine when you water your garden and for how long

- Works with MH and HPS

14x18x1 Exact MERV 13 AC Furnace Filters 12 Pack spl_hf - Protects plants by turningNordic 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