Acrylic glass holder for heating with a diameter of 25.5 mm suitable for the Basic filter system (transparent PMMA version).
The rubber/silicone holders of the heaters are not necessary - the heater cannot slip off. Even the protective grilles for very short heaters are not required in the Basic system. In the inlet chamber, the heating is optimally circulated and thus prevents premature calcification, which reduces the output and can possibly lead to damage. If possible, always use long heating types, which generally calcify less quickly than short versions.