50 sheets of Crimp Wired Foundation developed by Dadant & Sons Inc copied but unequalled. Steel Hook fits behind the wedge in wedge top bar frames. 9 vertical crimped steel wires radiate strength, perfectly milled cells deep exact walls. We recommend adding cross wires in deep frames Foundation is 4 3/4 inches x 16 3/4 inches fits 5 3/8 inch frames. Approximately 12 sheets per pound. Use wedge top bar only.