Heat n Grow heat mats come with a thermostatic control, allowing precise heta control, aswell as conserving power consumption.
The heat n grow trays use a carbon polymer element to efficiently disperse the heat across your entire root zone.
on average these heat trays only consume around 1c per hour!!
The single tray fits a "small" clone box - measuring 60x30cm internally - runnning at 24w
The double is surprisingly double the size of the single!
Runs at 48w and measures 67x40cm