The Long Right Clamp is much like The Original Right Clamp but with the extra length of a 2-3/4" long jaw.  End Screws adjust Clamping Tubes to provide uniform pressure over the length of the clamp.  Two 1 inch Base Angle Notches allow locations to apply glue to inside corner of the jointand adding corner stiffeners.  Can also be used for joining other materials up to 5/16" thick.
Photos show clamp holding walls of a DPM structure, holding a floor in a City Classics structure.  The photo showing the plexiglass parts demonstrates the Right Clamp's ability to also hold "T" shaped assemblies.