From the east:

Take 283 West from Lancaster to the PA Turnpike west toward Pittsburgh. Take exit #236.
Stay in the left lane after paying the toll and turn right at the sign for Rossmoyne Business Center. Then take an immediate left. Proceed down Ritter Road to 5000 Ritter Road (2nd floor) on the left side.

From the west:
Take the PA Turnpike east toward Philadelphia. Take exit #236. Stay in the left lane after paying the toll and turn right at the sign for Rossmoyne Business Center. Then take an immediate left. Proceed down Ritter Road to 5000 Ritter Road (2nd floor) on the left side.

From the south:

Take Route 15 North, past Route 114.  Take the Rossmoyne Road / Wesley Drive exit.  At the top of the ramp turn right.  At the first traffic light turn right onto Louise Drive.  Then take an immediate right onto Ritter Road.  Proceed down Ritter Road to 5000 Ritter Road (2nd floor) on the right side.

From the north:

Take Route 581 East to Route 11 South.  Take Route 15 South.  Take the Rossmoyne Road / Wesley Drive exit.  Turn left at the top of the ramp.  At the second traffic light turn right onto Louise Drive.  Then take an immediate right onto Ritter Road.  Proceed down Ritter Road to 5000 Ritter Road (2nd floor) on the right side.