(1) used 51" 3/4 × 53"3/4 vinyl tempered glass replacement picture / fixed window double pane Low-E The holes in vinyl frame are factory built condensation port weep hole s for IF (IF) ever moisture forms in vinyl cavity during hot cold weather / climate changes the original weep port hole covers are missing there's multiple simple solutions / options to correct / repair those two weep ports.Sealing these holes would not be ideal these condensation weep ports need to remain open as intended from factory. The Price Is $500.Email if interested.