Gator Grit 25 Count 9" x 11" 80 Grit Coarse Sanding Screen. The sanding screen is the ideal abrasive product to use to sand and feather drywall joint compounds and spackling to prepare wall surfaces for painting. It can also be used for scuffing painted walks before you repaint them. The screen is designed with an open mesh to allow dust and particles to pass through and reduce clogging. With its dual sided abrasive surfaces, you can turn the sheet over to have a new cutting surface. You can also rinse clean the screen to give the screen an even longer life.