Support frame having adjustable vertical supports

In a support frame for receiving external electrical devices, having a base frame on which two vertical supports are fastened and are arranged parallel at a distance from each other, each of the vertical supports having a first profiled leg, wherein the first profiled legs face each other and project into an installation space formed by the supports and have at least one row of attachment receivers spaced apart from each other in a first scaled pattern, the improvement comprising:

• each of the vertical supports (10) having at least one second profiled leg (12.2) which has a row of attachment receivers spaced apart from each other in a second scaled pattern and which projects in a direction away from the installation space, the first scaled pattern of the first profiled leg (12.1) being different from the second scaled pattern of the second profiled leg (12.2), and the vertical supports (10) being fastened on the base frame (30) in one of a first installation position and a second installation position rotated by 180° around longitudinal axes of the vertical supports (10) with respect to the first installation position.