These 4-mesh screens are framed in sturdy wood with spacer "feet" on the bottom so you can stack them and still get good air flow.
To properly dry your firework stars, you need a lot of air flow around all sides of your stars. The best way to make sure your stars dry properly on all sides is to lay them out in a single layer on a sturdy star drying screen. Place the screen with stars outside in a shady location. Or stack your screens/stars in a drying box for even faster drying times.