A moisture control apparatus, comprising: a housing having first and second sides spaced apart from each other by an interior of the housing; a first resilient flap covering a moist gas inlet provided in the first side of said housing; a second resilient flap covering a dry gas outlet provided in the first side of said housing in spaced-apart relationship to said moist gas inlet; a desiccant medium provided in said housing between said moist gas inlet and said dry gas outlet; a drying fan provided in said housing for generating a flow of a moist gas through said moist gas inlet, into said housing, through said desiccant medium, so as to be discharged from said housing through said dry gas outlet; and an arrangement for reactivating said desiccant medium comprising: a third resilient flap covering a regeneration gas inlet provided in the second side of said housing; a fourth resilient flap covering a regeneration gas outlet provided in the second side of said housing in spaced-apart relationship to said regeneration gas inlet; a regeneration fan provided in said housing between said regeneration gas inlet and said regeneration gas outlet. a housing having first and second sides spaced apart from each other by an interior of the housing; a first resilient flap covering a moist gas inlet provided in the first side of said housing; a second resilient flap covering a dry gas outlet provided in the first side of said housing in spaced-apart relationship to said moist gas inlet; a desiccant medium provided in said housing between said moist gas inlet and said dry gas outlet; a drying fan provided in said housing for generating a flow of a moist gas through said moist gas inlet, into said housing, through said desiccant medium, so as to be discharged from said housing through said dry gas outlet; and an arrangement for reactivating said desiccant medium comprising: a third resilient flap covering a regeneration gas inlet provided in the second side of said housing; a fourth resilient flap covering a regeneration gas outlet provided in the second side of said housing in spaced-apart relationship to said regeneration gas inlet; a regeneration fan provided in said housing between said regeneration gas inlet and said regeneration gas outlet. a first resilient flap covering a moist gas inlet provided in the first side of said housing; a second resilient flap covering a dry gas outlet provided in the first side of said housing in spaced-apart relationship to said moist gas inlet; a desiccant medium provided in said housing between said moist gas inlet and said dry gas outlet; a drying fan provided in said housing for generating a flow of a moist gas through said moist gas inlet, into said housing, through said desiccant medium, so as to be discharged from said housing through said dry gas outlet; and an arrangement for reactivating said desiccant medium comprising: a third resilient flap covering a regeneration gas inlet provided in the second side of said housing; a fourth resilient flap covering a regeneration gas outlet provided in the second side of said housing in spaced-apart relationship to said regeneration gas inlet; a regeneration fan provided in said housing between said regeneration gas inlet and said regeneration gas outlet. a third resilient flap covering a regeneration gas inlet provided in the second side of said housing; a fourth resilient flap covering a regeneration gas outlet provided in the second side of said housing in spaced-apart relationship to said regeneration gas inlet; a regeneration fan provided in said housing between said regeneration gas inlet and said regeneration gas outlet.