The Unitex Wall Terminal Large Louvre integrates an external weather louvre, wall sleeve, and duct connection spigot into a single compact unit. The satin anodised louvre provides full protection from the elements. This version includes an 80mm wall sleeve, with an optional 280mm sleeve available, and supports spigot connections ranging from 100mm to 400mm. Finished in epoxy powder coating, it is suitable for commercial ventilation installations. Stock reference: QSA250/80.