The Unitex Wall Terminal Large Louvre combines an external weather louvre, wall sleeve, and duct connection spigot into a single unit for efficient installation. The satin anodised louvre ensures full protection against weather. This model includes a 280mm wall sleeve section, with an optional 80mm sleeve available, and accommodates spigot connections from 100mm to 400mm. Finished with an epoxy powder coating, it is suitable for commercial ventilation applications. Stock reference: QSA315/280.