Kit includes: 

• BPA-Free: 2" humidity dome with two adjustable vents, 72-cell seedling insert, 11" x 21" watertight base tray. 
  
• 8 7/8" x 19 1/2" SunPad UL Listed seedling heat mat with 6' cord. The mat keeps the tray reliably 10°F (50°C) to 20°F (above ambient room temperature). 

We highly recommend using this seed-starting kit with our tabletop .