The Helios AS 100 is a compact and reliable spigot plate designed for connecting ND 100 ducts to flat surfaces. Constructed from durable plastic, it features a square flange plate measuring 102 x 102 mm, providing a stable mounting base. A 50 mm long round connector ensures a secure and tight fit with standard ducting. This fitting is ideal for use in residential or commercial ventilation installations where a simple and effective duct attachment is needed.