Abstract: A universal mount housing construction for right angle gearboxes and gearmotors that allows a wide variety of mounting and torque support configurations. The housing includes a generally cubic-shaped cast housing body having an input opening in a first side for receiving a rotational power input, and an output opening in at least one second side for transmitting a rotational power output through a hollow or solid output shaft. Four plate-shaped housing extensions are integrated into the cast housing member and provide two pairs of integrated torque arms. Each of the integrated housing extensions have a machined planar surface which is oriented perpendicular to the central axis of the output opening and coextensive with a raised, machined surface extending around the output opening. A through-bore extends through each of the plate-shaped housing extensions. The raised ring surface has tapped holes spaced about its circumference for flange mounting.