Introducing the new horizontal power vented, PTP unit heater line. This unit was specifically designed with the customer in mind to provide high value at a reasonable cost. The PTP delivers 80% thermal efficiency in a small business-friendly package. This unit features a stainless steel tubular heat exchanger as standard on all units with a 10-year heat exchanger warranty that provides customers with a peace of mind. The PTP is available in 7 different models sizes - 150,000 to 400,000 BTU/hr.