Which feature does a gas cabinet provide?

A gas cabinet is specifically designed to provide a fully enclosed noncombustible environment for gas containers, ensuring safety and compliance with regulations related to the storage and handling of hazardous materials. This design is crucial because it minimizes the risk of leaks or spills that could lead to fire or explosion hazards, particularly when dealing with compressed gases that may be flammable or toxic.

The enclosure not only protects the gas containers but also allows for proper ventilation, which is vital for mitigating any potential risk associated with gas accumulation. This controlled environment is essential in both healthcare and industrial settings, where the safe use of gases is paramount.

The other options describe features that do not align with the primary purpose of a gas cabinet. For instance, ventilated open spaces and immediate access without enclosure could potentially pose safety risks. Therefore, the design of the gas cabinet as a fully enclosed unit plays a critical role in ensuring the safe storage and utilization of piped non-flammable medical gases.