Gas appliances are to be installed in a confined space. Two permanent openings are provided and installed to meet local code requirements. These minimum openings communciate directly with the outdoors. Each opening shall ha ve a minimum free area based on total BTUH input rating for all of the appliances in the space. The openings are placed in an outside wall. The described free area is one square inch per ___ BTUH.

Gas appliances are to be installed in a confined space. Two permanent openings are provided and installed to meet local code requirements. These minimum openings communciate directly with the outdoors. Each opening shall ha ve a minimum free area based on total BTUH input rating for all of the appliances in the space. The openings are placed in an outside wall. The described free area is one square inch per ___ BTUH.