Artograph - 1520 Pre Filter Roll - The Artograph 1520 Pre Filter Roll is a unique roll mounted 100% polyester pre-filter that traps the bulk of the initial spray and provides a continuous clean work surface. To replace, simply pull down the soiled pre-filter and cutt off like with a pair of scissors. 20" x 50 yards, 100% spun bonded continuous filament polyester. Provides approximately 90 surface sprays.