Abstract: A cover for an opening of an ejector housing of a mold assembly comprises a cover portion and a mounting portion, the mounting portion is attached to a member defining the ejector housing at a side thereof comprising an interior wall of the ejector housing and the cover portion covering the opening defined by the ends of the members surrounding the ejector housing. The cover is attached to a side of the member by at least one fastener located so as not to be accessible for removing the housing cover as the mold assembly is mounted in a machine. A mold assembly comprises a cover in accordance with the invention. The cover advantageously comprising at least one opening therethrough to permit guarded examination of components of an ejector device within the ejector housing and viewable from the end of the ejector housing at which the cover is attached.