http://www.24q.org/family/basement-block-sizes-of-window-glass-bath-and-buildings/ When the size of a window of glass block, throw the old adage "measure twice and cut once." With a project in or outside the window lock that you need to measure twice and not at all (this reduction is due to not cut a block into slices Sun, 06 Jun 2010 00:49:24 CDT en