Propagation Mat with Air Circulation Frame, 110 Watts, 38 x 17 Inches Easy to use "Electra Grow" propagation mat, with support frame for a flat or pots Frame allows heat to rise and air to circulate between the mat and tray Plugs into any 110-120V AC system 38 x 17 inches, 110 watts, 1 amp (temperature at the mat is approx. 100 degrees) Heavy-duty rubber mat is waterproof (except at plug) to last many seasons