The Design is been kept very easy and argonomic... You can alter with the size and shape... Both for Vertical and Horizontal Uses... On the front you get 2 High frequency speaker holes and 2 Mid range / Mid Bass speaker holes (Note : if you plan to use the mid bass speaker... I would recommend to keep the bass ports which are at the back...) The bottom has 2 holes for the Bass speakers... (Note : Use Mid range speakers if you plan to use Bass speakers) At the back you get 2 bass ports for the air to come out... ( It still need some changes... Which can be done later on the Cabinet )