If you use high-density 32-point SNAP digital I/O modules, you'll be interested in our latest breakout board: the SNAP-UDC-HDB.
The small footprint of this new board makes it ideal for use in cramped areas. Just 3.32 x 3.95 x 2.27 inches high (8.43 x 10.03 x 5.77 cm), the SNAP-UDC-UDB fits in tight places but still gives you room to wire all 32 points to field devices.