Not too happy with you using autism to call someone dumb, but I'll leave this up assuming it was just a one-off.
Definition of sash for Students. 1  1 : a frame for a pane of glass in a door or window. 2  2 : the movable part of a window.
1-inch paintbrush: For priming sash. Materials Glass: For pane dimensions, measure the opening from top to bottom and side to side, then subtract 1/8 inch from each measurement. Aluminum foil: Protects undamaged glass from heat. Glazier's points: Hold glass against sash. Tom uses push-type points with shoulders. Glazing putty: Seals the edge of the glass against the weather. Tom uses an oil-based product in a can. Exterior primer: Seals wood against moisture; extends putty life.