meeting rails sufficiently thicker than the window to fill the opening between the top and bottom sash (two adjacent sash on a horizontal sliding window) made by the parting stop of the frame; check rails are usually beveled and rabbeted.
meeting rails sufficiently thicker than the window to fill the opening between the top and bottom sash (two adjacent sash on a horizontal sliding window) made by the parting stop of the frame; check rails are usually beveled and rabbeted.