The Houseworks traditional non-working window offers the same look as the working version but does not open. Made from unfinished wood, this window includes a removable acrylic pane but no interior trim, allowing for easy customization. Details:Unfinished2-31/32" x 5-5/16" x 1/4" (extra depth from the window sill)Fits an opening of 2-9/16" x 5-1/16" x 1/2"Wood and acrylic