What should be installed to maintain clearance near a vented wall furnace?

To maintain clearance near a vented wall furnace, the proper installation typically involves doorstops and door closers. These components are essential for managing the spacing around the furnace to ensure that it operates safely and efficiently. Vented wall furnaces require specific clearance from combustible materials and other obstructions to prevent fire hazards and allow for proper airflow.

Doorstops help limit how far doors can open, ensuring they do not swing into the clearance area needed around the furnace. Similarly, door closers ensure that doors automatically return to a closed position, securing the area and preventing any potential obstructions from interfering with the furnace operation.

While other options might have specific applications in different contexts, they do not directly address the vital clearances needed around a vented wall furnace. This clearance is crucial for safety and compliance with mechanical codes, which prioritize maintaining space around heating appliances for safety and efficiency.