1.This top rack is made entirely of steel frame used aluminium top rack plate to mount the box.
2.Suitable for mounting any plastic box
3.Not suitable for any aluminium Box.
4.comes with big soft and comfortable Water proof backrest cushion
5.The Cushion and top rack can be used together or they can be used separately.
6.The back rest can be Removed to just used a big top box on the rack.
7.The rack can be Removed to just used the backrest and they can be used together as well.
8.All hardware is made of stainless steel and Aluminium.
9. Very Easy to install.