DQR1005 Features: * Heater holder Includes: * Includes: Click Set Temperature Select Dial, Waterproof Double Insulation, Double Suction Mounting Bracket, Temperature Settings Indicator, On-Off Indicatorlight, Double Strength Glass Component Housing, Three Position Viewing Window, Insulated Heat Specifications: * 0 Watt -great for 20 Gallon tank Dimensions: * Dimensions: 2" H x 3.5" W x 9.5" D