Window Door Blocks Set of 5 Five piece set of blocks 4 windows and 1 door Crafted of smooth hard wood with permanently attached opening panels these blocks are perfectly scaled to be compatible with our unit blocks Window is 5 1 2 L x 4 W x 1 1 4 thick Includes . 4 window blocks Specifications . Grade Level Early Childhood Elementary. Selling UOM Set of 5. Certifications Conforms to ASTM F963. Safety No Choking Hazard. Allergens Contains No Allergens. Age Range 3 years. Weight 2 5 lbs