All-wood unit features four bins for counting place value to the thousands. Students count the items in the bins, then write the number on the write-on/wipe-off front. Bins each measure 4" high x 6" wide x 6½" deep inside. Has clear protective finish and hardboard dividers. Comes completely assembled. Made in the USA. Overall size: 4¼" high x 25" wide x 7½" deep.