Measure the size of your cabinet doors. Select a set of struts designed for your cabinet type and the approximate weight of your cabinet doors. Typically you will need two struts for each door.
Follow the mounting directions for your particular mini strut. In general, the strut is a gas-filled piston that extends when the door is fully open, with the fatter side of the piston mounted to the door and the narrower inner rod mounted to the cabinet.
Mount the door side of the piston using the mounting bracket. Open the door on the cabinet and extend the strut. Position the strut bracket approximately 2 5/8 inches from the hinge on the inside face of the door. The bottom or cabinet side of the piston should mount 3/4 inch inside the front face of the cabinet, and from one-third to half the height of the cabinet. With the piston fully extended, you should be able to locate the correct position for your particular cabinet size.
Mount the brackets in the order recommended by your strut manufacturer. Screw each bracket into the wood. Select screws shorter than the depth of your cabinet side wall and door. Most struts do not come with screws. Each bracket requires two screws.
Insert the strut into the bracket. Some struts are pre-attached to the brackets and you may need an extra person to hold the door while you do the installation.