Replace exiting (24) non functioning and inappropriate vinyl windows with new custom made all wood replica double hung gash vinyl windows are the only material being removed. All new sash will be installed into the original jambs with historic brick mold remaining in place. Original weight and pulley system will be restored using the historic material found within the weight pocked. The configuration will be one-over-one with insulated glass. A sample window has been fabricated and installed and inspected by dc fine arts commission. All existing vinyl windows with all wood replica sash. All historic fabric will be retained including jambs, sills, brick mold, pulleys, and sash weights.