Standard "supplied” toekick port option for all powerpipe subwoofer orders, except the 1500PTM. The tube size is 4 inch and has a 90 degree entry. The unit features a 3 x 14 inch in-room opening and a 2 inch clerance from flange edge to tube. With an overall toekick depth of 8.875 inch (22.5cm) - generally used for behind wall mounting.