The area of the frame can be calculated by finding the area of the outer rectangle and subtracting the area of the inner rectangle.
Area of outer rectangle = 36 * 24 = 864 square units
Area of inner rectangle = (36-2*4) * (24-2*6) = 28 * 12 = 336 square units
Area of the frame = 864 - 336 = 528 square units
Therefore, the correct response is:
576 square units