Here's a great way to add more text to an existing sign, with the flexibility to print your own message on a paper window insert.  Add names, hours, instructions, warnings, etc.  All window signs feature a rectangular "window" area that allows you to print your own custom insert on white perforated paper, (8-1/2" x 11" perforated sheet included).  Measuring 10" wide, this window sign will fit perfectly under any of our 10" wide Wave Series signs. The magnetic face easily removes for fast changeability of paper insert(s).  Black backer plate extends slightly higher at the top of the sign to create a black division line or reveal between your existing sign and window sign. Double faced tape also included on back for easy mounting.