Wooden double unit block made from Hard Maple. Each block measures 11 x 2.75 x 1.375 inches. This is based on the original and current standard unit block size and shape invented by Caroline Pratt and used in quality preschools and primary schools worldwide. Safe for ages 6 months and up. Completely free of borates, pesticides, and fungicides commonly added to rubberwood after harvest. We use only 100% Hard Rock Maple. Manufactured on demand in the United States from Custom Milled Domestic FSC-Certified Hard Rock Maple when your order is received. Accurately cut to within 1/100 of an inch.
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