Penn Plax Cascade 100 Watt Adjustable Heater Part # CH8100

For 20 Gallon Tank

• Accurate to 1
• Fully Submersible
• Mount Horizontally or Vertically
• Factory Preset at 76
• Temperature Dial Adjustment
• Fresh or Saltwater Safe
• Visible & Accurate Temperature Setting Scale
• Easy View On/Off Light
• Length 8.5″