50 Each. Black Plasticell is an injected molded plastic raised cell sheet. The best plastic foundation available. Tested and proven as the ultimate in plastic foundation. Precise deep cell walls. Uniform exact cells. Fits 9 1/8 inch frames Foundation size is 8 3/8 inches x 16 3/4 inches. Use in wedge top bar or grooved top bar frames. The black color makes it easier to see the eggs in the cell.