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Grohe’s concealed installation modules are essential for ensuring optimal operation of specific built-in thermostatic and single-lever faucets, as well as urinals. The series offers various types of control bodies—universal units for both single-lever and thermostatic faucets, bodies designed for the Grohtherm line, and built-in sets for urinals. Each module features a waterproof membrane for wall sealing, ensuring reliable performance, easy installation, and long-lasting durability.