The ProtectoXtracTop is a retro-fit-able filter unit that enables the ProtectoXtract to be used for grinding applications. Extraction of particles takes place through a perforated plate within the supporting surface. ATTENTION; This unit must only be used in combination with the ProtectoSpark (EXT978013). Working surface W x D = approx.. 1100 x 700 mm External dimensions: W x D = 1150 x 750 mm