Precision 51.5mm Non-Welded Group Head Screen - 200 Micron A compact pressed-membrane shower screen (I.M.S. #CI 200 IM) sized for the smaller 51.5mm group pattern found on select Ascaso, Astoria, Elektra, Faema, Fracino, La Cimbali, and Reneka machines. SPECIFICATIONS External diameter: 51.5 mm Central hole: M5 Perforation: Ø 3 mm, circular distribution Filtration: 200 micron COMPATIBILITY Fits: Some, but not all, models of Ascaso, Astoria, Elektra, Faema, Fracino, La Cimbali, and Reneka Replaces: I.M.S. #CI 200 IM INSTALLATION Simple DIY swap during routine group head maintenance. PRO TIPS Because the membrane is pressed rather than welded, avoid wire brushes when cleaning, a nylon brush and standard backflush detergent will keep the screen clear without damaging the pressed membrane.