Step 1: Gather Your Materials
2 Expandable Window Screen units (4 Screens)
Industrial Strength Adhesive Velcro
Roll of Velcro One-Wrap (Not shown - Must stick tightly to the Velcro above)
Diffuser fabric - I used 200 thread count twin bed sheet
Spline roller tool
A pair of scissors
Note: The velcro I ended up using isn't pictured. I bought white industrial adhesive with four large pieces per package (two mating pairs).
Note: Make sure the one-wrap grips the industrial adhesive Velcro well. I found some that doesn't.