Zoo Med ReptiTherm Under Tank Heater (U.T.H) 24W, 8 in x 18 in, Large

For a roomier home and a reptile that needs warmth across more space, the Zoo Med ReptiTherm Under Tank Heater in the 24-watt Large size has you covered. Measuring 8 inches by 18 inches, this is the biggest pad in the ReptiTherm U.T.H. lineup, spreading gentle heat over a wide stretch of your terrarium floor. Zoo Med designed it as an ideal 24-hour heat source for tropical or temperate reptiles, so your pet can settle in comfortably day and night.

Why the 24-watt Large ReptiTherm U.T.H. works for bigger habitats:

• A generous 8-inch by 18-inch surface covers more terrarium floor than the smaller sizes.
• The 24-watt rating is the highest in this U.T.H. range, suited to its larger footprint.
• Use it as a primary or secondary heat source as your setup requires.
• Designed for tropical or temperate reptilian species, covering a wide range of pets.
• Contains a solid state nichrome heating element for steady, dependable warmth.
• Permanently adheres to your terrarium, forming a solid bond that Zoo Med says supports optimum heat transfer.
• Heats from below, the placement many ground-dwelling reptiles prefer.
• UL and cUL approved, with GS, TuV, and CE approval noted for Europe.
• Zoo Med also calls it an excellent secondary heat source to pair with other equipment.
• Runs as a 24-hour heat source, so warmth stays consistent across your larger enclosure.

Because the ReptiTherm U.T.H. bonds permanently to the glass, map out exactly where you want this wide pad before pressing it on, since its larger size leaves less room for second guesses and the bond is meant to hold for good. Once it is in place, you have a steady, full-coverage warmer working quietly beneath your reptile's favorite ground, spreading heat across enough of the floor that your pet can choose where to settle. Many keepers run an under tank heater like this Large with a dedicated thermostat so temperatures stay precisely where their pet is happiest and the wide surface never overshoots. For a bigger enclosure that needs even, dependable belly heat from edge to edge, it is a sensible way to keep the whole habitat cozy all day long.