Mars Hydro 10'' x 20.75'' Seedling Heat Mat and Digital Thermostat Combo cube Prevent Pump Clogging: Use this

Prevent Pump Clogging: Use this fine mesh

Duct ports that close on either side further reinforce this light-proof sealing

Spring Wire (also know as wiggle wire) and screws are not included

While Technaflora's original formulation is among the strongest cloning gels on the market

Mars Hydro 10'' x 20.75'' Seedling Heat Mat and Digital Thermostat Combo cube Prevent Pump Clogging: Use thisDescription Quick Overview: Our set includes one 10" x 20. 75" heat mat, perfect for a standard 1020 tray. With temperature controls for your specific needs, Mars Hydro's seedling heat mat provides a steady, soft warmth using far infrared radiation heating. It's perfect for seed starting and cutting propagation in any horticultural system. Its double water proof PVC insulation and over heat protection to ensure safe operation and easy cleaning.