Janitrol B3500 Heater. "As Removed" from a Piper Navajo. Model # B3500 Part # FRD39D59EL Heater is in overall attractive condition, and has normal wear from use - see pictures. Other B3500 heaters are also available, as well as miscellaneous components - see our other listings. WE WILL SHIP TO THE UNITED STATES AND ELSEWHERE, PLEASE CONTACT US FOR A SHIPPING QUOTE. We combine shipping. If you have any questions, please email.