Kiln-dried
pine is connected to a specially milled 3/32" aluminum bar. Paintings
will never twist, warp, bend or change from dryness or humidity. The recycled
aluminum stock
provides a structural frame of total strength and stability. The pine outer
bar offers a smooth, rounded edges and a solid surface for stapling. Pro-Bars
can
be cut to any length and assembled with steel corner inserts. Optional BEST
Keys allow tightening or loosening of the canvas with the turn of a nut.