IMS "MATRIX®" Shower Screen The IMS MATRIX® shower screen is an innovative shower screen featuring 50 layers of micropores (microspheres) made from AISI316L stainless steel. These form tens of thousands of channels with a mesh size of only 4–5 micrometers. This ensures a homogeneous water distribution over the coffee grounds. The fine porosity causes a pressure drop just before the water hits the coffee grounds. The internal pressure in the fine-pored plate causes the release of nanobubbles from water vapor and CO2, resulting in a more stable crema. The filtering effect also reduces the backflow of coffee particles and protects the brew group. The result is a stabilized, longer-lasting crema. Harsh acidic aromas are softened and channeling is prevented. The filtering effect also reduces the backflow of coffee particles, thereby protecting the brew group. Suitable for these espresso machines: Bezzera (E61 brew group): DUO MN, Matrix MN, Sole Top MN, Luce Top MN, Magica, Mitica, Unica, Selenia Others: ECM, Lelit, BFC, Brasilia, Fiorenzato, Sanremo, SAB Italia, Vibiemme, Famea, Wega, VBM, CBC Royal, SV Italia, Expobar.. *Made in Italy