The mechanical measurements of the 240 W models are 4.89 x 4.67 x 1.89 inches while the size of the 480 W models are 4.89 x 4.67 x 3.23 inches. They both have a similar size except for the width. Both models also have the side mount option. The entire TIB-EX product family uses screw terminals for the input and output connections. Additionally they have a DC OK LED and voltage adjustment on the front