Fastening Peninsula and Island Cabinets to Floor Peninsula Cabinets are secured to the floor with wood blocks positioned front and back behind the Toekicks. Island Cabinets require additional blocks at each end. Figure 16 To prepare blocking, square Peninsula Cabinet with the Wall Base Cabinets and mark the floor at the Toekick locations, front and back. Cut 2 x 4 wood blocks 8-12" long to fit the underside. Measure the thickness of the Toekick and position blocks inside of the Toekick line so cabinets can be positioned over them. Fasten blocks to floor. Attach cabinets together following the "Attachment Tips for Base Cabinets" on page 8, then use finish nails to secure cabinets to the blocks on the floor.