Remind young students of the shape and sound of each letter with this bulletin board. An example of each letter rides in its own car! 31 pieces. A 4-page Teacher's Guide is included. This product is acid-free per industry standards; contact us for technical information. Measurements: Cloud (16.5"W x 6"H), Engine (11"W x 7.5"H), Train Cars (7"W x 8.5"H).