There are several files here: a combined door and window on a single file, a door alone, a window alone and the window components on three separate files.
The window can be assembled to slide open and closed.
The scale is 1/2 inch = 1 foot. For dollhouse scale (1 inch = 1 foot) just double the scale in your slicer application. The single files are included to allow the larger scale to fit on a smaller build plate.
Print these out with 100% fill.
The door can be reversed by mirroring it in your slicer app, and a door with both faces can be built by gluing one of each orientation together back to back.
The window is assembled by placing the frame face down and placing the lower (sliding) sash under the upper sash with both at the top of the frame. The lower sash acts as a spacer for the upper sash placement. Glue the upper sash to the frame being careful not to use too much glue which will seep through to the lower sash. When the upper sash is held securely, move the lower sash down to the sill of the frame and glue the rails to the frame, again being careful to keep glue from the sash.
The lower sash should now slide freely up and down in the frame.