For use under a Growkit. Ultra-thin infrared heating mat, for safe and uniform heat distribution. Heats the grow kit and keeps the activity of the substrate on the level during the colder months of the year and at night. Improves the climate and enhances the yield.

IMPORTANT: Place a few pieces of wood on the Thermo Mat to facilitate airflow under your kit will maximize heat diffusion.

Read more about it in chapter 7 of the manual:

Growkit Manual