This is the Great Planes ElectriFly HyperFlow 370 EP DF outer duct. This is the outer duct for the HyperFlow unit with motor and for the HyperFlow unit without motor.
Includes: One outer duct
Inside diameter: 2.1 (54.5mm)
Outside diameter: 2.2 (56.5mm)
Motor mounting inside diameter: 1 (25.4mm)