Paragon's Single-Sided Wood Shelving makes an attractive addition to your school library. Constructed from a high-density, thermally fused melamine with a particleboard core, the frame has a steel brace that holds the unit together and prevents swaying. Pins and locking cams hold the laminate shelves in place, and special stops keep them from bending and prevent books from pushing past the back edge. Adder units won't stand alone, so you'll need to order a starter unit for each row of shelves. Add backing for an additional charge.