The Universal End Clamp grabs the underside lip of the module from the inside of
the rail and remains hidden. The SnapNrack Ultra Rail may be cut flush to the
module and finished with an end cap for a clean appearance.
The Adjustable End Clamp is a top down clamp which requires a minimum of 1" of
rail extending beyond the module frame. Modules that do not have an underside lip must use the
Adjustable End Clamp.