13 15/16 x 29 15/16 x 3/4 (13.94 x 29.94 x 0.75) Pleated MERV 7 Air Filters 3 Pack Air Purification or they can be used

or they can be used for flowering by stacking the 4x4x3 on top of this 6x6x4

it contains high concentrations of red and yellow light in it's spectral output

4-in-1 Sensor MBS-PRO

Root Weevils

Built with 3 customizable channels for blooming

13 15/16 x 29 15/16 x 3/4 (13.94 x 29.94 x 0.75) Pleated MERV 7 Air Filters 3 Pack Air Purification or they can be usedNordic Pure MERV 7 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 and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters