Ongrok Ongrok Colour-Coded Hygrometer (6 /Pk) Mammoth Grow tents Coarse Perlite

Coarse Perlite

These hygrometers are also perfect for humidors

THICKNESS : 4 mil

The Stealth Filtration is built with a packed bed designed to give consistent performance and long life (24 months)

Ongrok Ongrok Colour-Coded Hygrometer (6 /Pk) Mammoth Grow tents Coarse PerliteOngrok Colour Coded Hygrometer (6 Pack) COMPACT DESIGN Their small size makes it easier to fit in almost everywhere! Great for use at home, office, car, schools as well as places equipped with air condition, etc. These hygrometers are also perfect for humidors, sealed jars, bags or pouches, violin or Guitar cases, wine cellars or wherever you want to track the humidity & temperature. LCD DISPLAY Our ONGROK mini digital hygrometers allow you to easily