20 sheets of Crimp Wired Foundation, 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 5 5/8 inches x 16 3/4 inches fits 6 1/4 frames. Approximately 11 sheets per pound. Use wedge top bar only.