The door hinges allow the main fire door on the Olymberyl Maximus to open and close smoothly while maintaining a tight fit against the door frame. Worn or damaged hinges cause the door to sag or sit unevenly, which breaks the seal and lets air in around the door edges. This is a replacement set for the original hinge components. ✅ Compatible with: Olymberyl Maximus stove (HF446) 🔧 Specifications Weight: 0.64 kg Material: Cast iron Heat resistance: 650°C Part type: Door hinges (set) Cast iron hinges are built to handle the weight of the fire door and the thermal expansion that comes with heating and cooling cycles. Replacing sagging or cracked hinges restores correct door alignment, which is critical for maintaining an airtight combustion chamber and efficient burn.