20x22x1 Pleated MERV 13 Plus Carbon AC Furnace Filters 24 Pack fans-ventilation-ducting The blocks can then be

The blocks can then be placed on top of a slab to provide for a larger growing volume

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conductivity (EC and 500ppm/700ppm) and temperature (5-in-1)• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance• Easy-to-use design and fast calibration adjustment• Double junction replaceable probe

3inch/L1160*W190*H615mm

Pleated sides expand for ultimate storage

20x22x1 Pleated MERV 13 Plus Carbon AC Furnace Filters 24 Pack fans-ventilation-ducting The blocks can then beNordic Pure 20x22x1 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material while