Window Unit Blocks - Foundation Set

Bring a whole new level of light, color and design to the classic unit block system with this set of wooden blocks and colorful acrylic pieces. Window cutouts in blocks allow for customization and control over creations. 24-piece set includes 12 wooden blocks in 3 shapes and 12 acrylic blocks in 3 shapes and 10 colors.

Safety Tested

Quality Materials

Innovative Design

Rooted in Theory

Toys That Teach

Our collection of educational toys have been designed to encourage early development, spark curiosity, and inspire hands-on learning through play.

Rooted In Theory

Industry experts, educators and parents design our toy sets based on every child’s innate patterns of play.

Made To Last

We prioritize quality and create toys that are built to last (and not end up in a landfill!). Durable, easy-to-clean materials make Guidecraft learning toys the right choice for the home and classroom.

As seen in!