Windowsill Heat Mat 7.3W 120V (3 inch x 20 inch) Micro Nutrients the zone stays off until

the zone stays off until the controller energizes the solenoid

7 umol/J full-spectrum board

Venturi Passive Cooling: Fanless heatsink design eliminates moving parts in humid greenhouse environments

Punch the dripper in

Windowsill Heat Mat 7.3W 120V (3 inch x 20 inch) Micro Nutrients the zone stays off untilHydrofarm's windowsill heat mat is perfect for veteran growers, beginners, and children too. It is the perfect size for small growing spaces, and improves germination by warming the root area 10 20 F over ambient temperature. By warming the roots you increase your growing success as this mat will maintain a controlled temperature all season long. 3" x 20" UL listed Power cord included