Stacker doors function like sliding doors but have more panels. Multiple panels slide on a track and stack behind one another, creating a larger opening than a standard, two-panel sliding door. For interior use, they are often installed as wardrobe doors. For exterior use, they provide a wide vista because panels require little space when opened. We recommend using double-glazed doors for the Melbourne climate to improve energy efficiency. We offer the best value for double-glazing aluminium, uPVC and aluminium-timber products in Australia.