it offers excellent airflow and is relatively sturdy for the lightweight components used, due to the overall shape.
What you will need:
Tin Snips, or other heavy duty scissors
rubber edge molding (be creative if you don't have any)
Step 1: Measure for that 'custom' fit
Multiply your laptop's width x 3.14 (pi, to more significant digits than is needed). This is how long your strip needs to be. If you don't want to do all that math, you can just eyeball it, but you may lose that 'custom' fit.
Example: Mine was 10" x 3.14 = 31.4"