This large building baseplate measures 15" (38.1cm) x 15" (38.1cm) Compatible with any LEGO DUPLO bricks. This baseplate is a good supplement to any LEGO DUPLO collection. Even big imaginations need a place to start - and our baseplates do the job. Large format plate allows children to build and expand on the world he or she has created. Bricks are not included. Start creations here! Not compatible with regular LEGO bricks.