Overview The Zoo Med ReptiTherm? Under Tank Heater (U.T.H.) is the perfect 24-hour primary or secondary heat source for your reptile?s habitat. Designed for both tropical and temperate species these heaters provide safe consistent warmth by adhering permanently to the bottom of the terrarium for optimal heat transfer. Each unit is UL/cUL approved in the U.S. and GS/TuV/CE certified in Europe ensuring safety and reliability. With solid-state nichrome heating elements these heaters are energy-efficient durable and built to last. Key Features Safe & Certified ? UL/cUL approved (GS/TuV/CE in Europe) for maximum safety. Consistent Heat ? Solid-state nichrome heating element ensures even reliable warmth. Permanent Adhesive ? Forms a secure bond to the terrarium base for optimal heat transfer. Energy Efficient ? Low wattage design saves electricity while maintaining steady temperatures. Flexible Use ? Suitable as a primary or secondary 24-hour heat source. Multiple Sizes Available ? Designed f