3. Place inner frame on plastic window in desired position. NOTE:Desired window position may not necessarily be centered on plastic window. Position window insert for optimum line of sight and visibility. Trace inside edge of inner frame and mark all bolt holes with a felt pen.
4. Set aside inner frame and carefully cut out traced
section. Cut on "outside" of traced line by at least 1/8" with
a sharp heavy duty scissor or a box cutter.
