CRL Diecast Window Sash Corners are designed to be used with Universal CRL-Sash for miter-cut fabrications Miter-cut fabrication is accomplished by first cutting the sash to the desired width and height Next insert the corners and wrap the sash around the glass or acrylic panel Then, using a S1936 Crimping Tool, crimp the frame into the dimples in the corners to provide a secure fit