Abstract: Biosafety units, methods of making and sealing the same are disclosed herein. The present invention includes a unitary structure able to be validated for pharmaceutical manufacturing comprising: at least one controlled air, sealable, sterilizable cleanroom; a mechanical system room adjacent to and separate from the cleanroom comprising: one or more air handling units that provide conditioned air to the cleanroom; and one or more power busses that provide power to electrical outlets in the cleanroom from two sources, wherein the at least two power supplies are connectable to one or more external electrical power sources; an integrated fire suppression system integral to the cleanroom; and one or more corridor connectors, wherein a corridor can be attached at the corridor connector.