Lets say you start in the front. When you have it all securely tucked into the frame up the front and across the top down to the straight back side, slide the bottom end into the tab in the track. If there is a bulge in the channel, there is too much material. Trim to fit.
Note: use clamps to make sure it is completely into the corners and straight on the top and sides before you cut)
Depending where you bought it, could be 1/2 " or 2".
Last edited by Jim Sears; 05/18/2017 7:18 PM.
