1981 Cessna 421C - N6869Z,ClimaTek Furnace Air Pressure Switch Replaces Sterling, Beacon-Morris Part # J11R06779-001,J31R03086 Fan Motor, McMillan Electric A0824A2296, Extended Part Number 11J31R03086,ClimaTek Furnace Air Pressure Switch Replaces Sterling, Beacon-Morris Part # J11R06779-001: Amazon.com: Tools & Home Improvement,3.5-inch Embedded Board with Intel Celeron J1900 N2807 - CAPA842