16x22_1/4x1 Exact MERV 14 AC Furnace Filters 6 Pack controllers These growing blocks are used

These growing blocks are used for direct sowing or "blocking on" of Macro and Multiblock raised plants

Add 1 to 2 B'Cuzz Blossom Builder Tabzz

Nutrient Composition

Lamp Efficacy with QB 288 V2  2

User controllable tumbler speed

16x22_1/4x1 Exact MERV 14 AC Furnace Filters 6 Pack controllers These growing blocks are usedNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.