A toothbrush, toothpaste tube and solid soap keeping set provides a mechanism for installing a toothbrush, toothpaste tube and solid soap used in a bathroom. The filter captures the mercury which then can be released and collected as product. Further, the invention provides a wind box which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. With this arrangement, un-purified liquid, such as water, is introduced into the container.