This is the control box only that holds the motor, timer, and battery. It is made for the common large 1/4" shafted motors (404M-6 or 404M-12). It comes with the adjustable "T" bracket mounts and a captive hinged lid. A removable bracket for THE-TIMER is also included. 

Inside dimensions:  8 1/2" wide x 6" deep x 6 1/2" tall.

The motor mounting holes are 2 5/16" apart with a center hole of 15/16"

Please don't ask for free shipping.