Windowsill Heat Mat 7.3W 120V (3 inch x 20 inch) Air High dirt-holding capacity: Wide pleated

High dirt-holding capacity: Wide pleated media traps more sediment between changes

The inline connecters are 3/4 in FPT by 3/4 in FPT

making 640 gallons of ready-to-use solution

Klone sites that is

Dimensions (LxWxH): 14

Windowsill Heat Mat 7.3W 120V (3 inch x 20 inch) Air High dirt-holding capacity: Wide pleatedHydrofarm'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