Abstract: A building aperture cover reinforcing device includes a support post having a first end spaced apart from a second end by a middle portion. Engagement pins extend from each end of the post, and linking hooks extend from the middle portion of the post. An upper anchoring assembly adapted for securement to an upper boundary wall of a building aperture selectively maintains the first engagement pin in a securing orientation, while the second engagement pin is selectively held in place by a lower anchor plate. The linking hooks engage corresponding linking plates disposed on the selected aperture cover. Each engagement pin includes bracing notches that engage corresponding edges of pin apertures located within the anchoring assembly and anchor plate, when the post shifts laterally. The bracing notches prevent vertical motion of the post during negative wind loads and positive wind loads.