The Current Tools 451 handles ½" through 4" PVC conduit — the full range of common commercial conduit sizes in a single heater. The full-length door makes loading and unloading straightforward, and double doors allow heating of shorter conduit lengths with one door closed for efficiency. A highly reflective interior delivers even heat across the full length, and durable wheels keep it mobile on the jobsite. 120V/2300W/20A. 60 lbs. Made in the USA. Two-year warranty.