This is the Great Planes ElectriFly power system brushless motor mount. This attaches to the firewall and the electric motor attaches to this mount.
Requires: Mounting to the firewall and attaching the motor
Length: adjustable from 3.5-4.6 (89-117mm)
Mounting Plate Width: 2.7 (68.5mm)
Mounting Plate Height: 2.17 (55.1mm)
Weight: 4.9oz (140g)
Bolt Pattern: 1.85 (46.9mm) at mounting hole centers