An adhesive backed window trim bendable and divisible along a hinge separating the trim into two strips with score lines in each strip. A nub is formed along the side edges of the window trim for use in providing a finished edge concealing the adhesive when the undivided trim or the trim strips are used during installation of a replacement window or the like. The trim is co-extruded from a rigid PVC and plasticized PVC with shallow furrows on the rear face forming the score lines.