Rinnai FOT-221EX17/EX22 Vent Pipe Extension Kit, 60-Inch - 80-Inch Exhaust Pipe (adjustable) - 21.0-39.6-Inch(533-1005 mm) Additional Exhaust Pipe - 40-Inch(1016 mm) Air Intake Hose - 90.6-Inch(2.3 m) 1 Hose Joint 3 Pipe stoppers