This is the add-on unit for the MTMDU Commercial Heat Mat. You can daisy chain up to 4 of these units to the MTMDU unit to maximize your seed starting area.

Bottom heat is one of the most important and effective ways to improve germination and rooting. Our new HEAVY DUTY modular commercial heat mats will provide uniform heat for hundreds of seedlings or cuttings.

• Supersized mats: 60" x 21"
• Rugged and durable with waterproof connectors
• Daisy chain up to 5 units (4 add-on units plus the the Commercial Mat)
• Plug into our Digital Heat Mat Thermostat (MTPRTC)
  (required, sold separately)