The Hydro-Quip Pure Heat is a convenient and versatile in-line heater that's designed to fit in compact areas. Featuring a slim and stainless steel design measuring 7 in length and 2.96 in diameter, the Pure Heat heater fits most jetted tubs and whirlpool baths. It can adapt to 3/4 to 1-1/2"PVC plumbing and has reverse mounting ability for maximum versatility. Using 120V and 1.0kW, this pressure activated heater provides effective heating without the hassle.