This Grohe Arena Cosmopolitan WC Wall Plate is designed for dual flush or start & stop actuation and horizontal installation. It features a scratch-resistant and easy-to-clean surface thanks to the GROHE StarLight chrome coating. It is compatible with pneumatic drop valves AV1. For mounting of small flush plates, please order inspection shaft 40 911 000 (sold separately). This product also incorporates GROHE EcoJoy technology for water conservation and perfect flow.