Outside dimensions: 2-1/4" x 21-1/4" x 5-5/8". Inside dimensions: 2-1/8" x 20" x 5". Extra long and deep, this pew rack accommodates up to 3 copies of most hymnal books with plenty of room for missals or supplemental hymnals. Less than half the cost of wood pew racks, yet superior in many ways. Injection molded of butyrate, an extremely strong clear plastic material. Unbreakable in normal use, screws and installation template included. Case of 12.