8" x 19-1/2" Floor Sanding Sandpaper Sheets are cut to fit Clarke - Alto - American EZ-8 Drum Sanders with a sandpaper clamping bar on the drum which is secured with three screws. These sheets will fit these drum sanders which use 8 Inch by 19-1/2 Inch sheets with notches: Alto - Clarke - American Sanders DU-8, DU-8R and Rentlink - Hiretech HT8 or HT-8, and Alto – Clarke – American Sanders EZ-8 with the clamping bar on the drum. Important: These sheets will NOT fit the EZ-8 with the expandable drum which uses continuous belts. Please check your current sandpaper size or consult your sander's owner's manual to ensure correct ordering. Partial boxes are NOT returnable.