Now stronger than ever! Birch and Maple construction, all joints reinforced with heavy duty screws. KYDZSafe® edges are carefully rounded and sanded. The large size encourages group play and cooperative activity. A set consists of six basic parts—Half Unit, Full Unit, Double Unit, Ramp, Short Board, and Long Board. Full Unit measures 11" wide x 11" long x 5 1/2" high. Nursery Set includes 6 half units, 5 full units, 4 double units, 4 ramps, 4 short boards, and 4 long boards. Weight 149 lbs. Additional shipping charges apply.