Temporary Walls in New York City Flex walls are the most economical and versatile structures that can be used in residential and commercial premises in New York City. These are simple to install, temporary, pressurized partitions which may be installed and removed at will without causing destruction to property; they are thus favored by apartment tenants in need of bedrooms, business that require temporary offices, as well as for storage where they can support weights of up to 25 pounds, enough to hold flat screen TVs.