The use of portable medical oxygen in the home has grown over the past decade. Oxygen saturates fabric covered furniture, clothing, hair, and bedding, making it easier for a fire to start and spread. Homes where medical oxygen is used need specific fire safety rules to keep people safe from fire and burns.
This is a door that leads to the older part of the home. The contractors did a nice job on the home remodel but stopped short at making the older part of the basement easily excessable.
The frame work was built to fit a 36" door but they must have only had a 32" to place there. Now if the need comes to replace the Central air system it will fit with out removing the door. As well the room now can be use to store larger furniture and items.