Caixa de subwoofer automotiva ventilada para um alto-falante redondo de 10 polegadas - 35L / 38Hz - 572 × 344 × 310 mm

Can you explain the height, width, and length of the port?

Can you please explain the height, width, and length of the port? I have changed the height of the port to different numbers but the 3d rendering does not show any changes. I don't understand. When I go to view the parts, none of the dimension change. What part of the port does height and width signify?