NCAA 1-6 Home Plate
SECTION 6. Home plate is a five-sided slab of whitened rubber or similar material. One edge is 17 inches long, two are 8½ inches and two are 12 inches. It shall be set in the ground so that the two 12-inch edges coincide with the diamond lines extending to home plate from first base and third base and with the 17-inch edge facing the pitcher. The top edges of home plate shall be beveled; and the plate shall be fixed in the ground, level with the ground surface.
Note: It is permissible for home plate to be a white painted area with these exact dimensions on a field where the entire home plate area is covered by artificial turf.