Flush Cup Rim Latch Set for eoor thickness 3/4inches to 1-1/8 inches. Supplied with Black Polymer Spacer for Surface Mounting. Chrome Plated Zinc Alloy Sliding Lock Button Reverse Bevel with Flush Strike Dimensions Case : 2-1/8" x 1-3/4" Dimensions Escutcheon: 2" x 2-1/4" Cup Screw Size: #8 Case Screw Size: #6