nd series rose


03-042 is the part number for the inside or outside rose.
The diameter of the ND rose is 3 7/16".
The blank outside rose part number is 09-508.  This part is identical to the standard rose where a plug is installed inside the rose so a small seam is visible.  Mounting posts ...
The square block is probably the springcage assembly, L283-040.  This component has an internal spring to keep the lever in the horizontal position.
For W lock levers, you can choose whether or not to install the mounting posts.  This will also affect how the door is prepped so be sure to determine how you will install the locks befor...