Moist Heat Therapy Unit, also referred as a Hydrocollator Heating Unit, are used to apply effective heat to hot packs used in moist heat therapy. Unit is supplied ready for immediate use and requires no special plumbing. Unit features: stainless steel insulated wall, thermostatically controlled, casters ( mobile units only), and standard size Hot Packs. Other unit sizes and accessories (variety of hot packs, tongs, side table rack, etc.) are available.