The Universal Fitting lumbar padded back rest has been designed to fit most seat boxes and will without obstruction attach to either square or round legs (20mm - 30mm). With its fully adjustable height settings, the back rest will work on boxes with leg centres from 45cm to 70cm.
Note to obtain maximum width setting the brackets must be attached at an angle from the frame to your seat box legs.
The actual back rest itself is 44cm wide and 25cm high, the total height from the top of the back rest to the bottom of the support bars is 70cm, the fixing brackets when laid flat are 19.5cm in length, with fixing holes 14cm apart, the padding on the back rest is 6.5cm at the top increasing to 9cm on the furthermost areas thus forming a lumbar support.
All weights and measures are approximates...
This item can be fixed to your existing seat box by a competent person (you will no if it is suitable? you already own your box?) simply slide on your existing box legs using the universal fittings, again you will be able to work out if suitable by looking at and measuring your own box by comparing dimensions and studying the pictures here.