3 years & up. Encourage your children to explore their building block with this Sturdy Wooden Preschool Tabletop Light Box for Block Play and More. This exciting light box promotes fine motor skills, exploration, and curiosity. Children can explore the features of their blocks, natural elements, or even art projects. The sturdy, light box fits where space is limited. This light box accommodates four prism bases for block play. Prism bricks and plates sold separately. Minor assembly required. Measures 23"W x 7"H x 23"D.