This 37” BEST lightweight stretcher bar is created from white pine. White pine is sustainable and fast growing, and it is plentiful in the small white strips that are used to make these stretcher bars. A great choice for the classroom and for art education, these budget friendly stretcher bars offer great support and stability to your canvases. They are cut 1/8” shorter than the size listed in order to fit inside a picture frame, as the canvas adds extra width when it is stretched. Should not be used for larger works of art as heavy duty stretcher bars are better for large paintings.