The Helios RP-WH is a durable wall sleeve made from high-quality plastic, designed for room-side installation of designer ventilation valves. It is suitable for DN100 duct systems and can be easily cut to accommodate any wall thickness, providing a flexible and secure fit. The sleeve includes a mounting template to simplify and speed up the installation process, ensuring precise positioning and a neat finish. Ideal for integrating ventilation valves seamlessly into wall structures.