Slab Dream Lab 10X10 - 4 Pack Roads Gray Durable baseplates fit with all major brand building brick brands and tightly grip bricks. They are stackable and clip together to expand infinitely. This 4_Pack is perfect for building modular cities! • Casepack Quantity: 5 • Product Dimensions/Weight: 10.25 L x 10.25 W x 1.2 H / 1.67 lb • Inner Pack Dimensions/Weight: 10.32 L x 10.32 W x 10.75 H / 15.53 lb • Age Grade: 8+ • Made In: USA