This is a new ZILLA Heat Mat Terrarium Heater, size Medium, designed for 30-40 gallon tanks. It measures 8" x 12" and operates at 16 watts. It's an ideal external heat source for various reptiles, amphibians, and arachnids, promoting thermoregulation for daily activity, appetite, and metabolism. The heat mat features easy-to-use adhesive mounting for optimal heat transfer and is energy-efficient. I have 9 of these new in the box, never opened.

It's important to note that this heat mat is for use with glass tanks only. Always read and follow the provided instructions to ensure safe and effective use.