The 24" E-Z Bracket attaches to the cabinet with wood screws as well as to the counter top with impact absorbing adhesive caulk or silicone. It is made to accommodate virtually any dishwasher on the market and may be installed prior to or after counter top installation. There is no need for the dishwasher to be on site due to the multiple attachment locations. Counter top installers need only install the bracket across the top of the dishwasher bay, flush tabs to face of cabinet and install screws provided at each end.