A flashing hood for utility lines passing through a wall of a building has a plate body with a plate opening surrounded by an enclosed hood body. The bottom of the enclosed hood body has a sidewall with a seal-receiving profile and a cover-receiving profile spaced from the plate body and above the seal-receiving profile. The enclosed hood body has a removable seal that engages the seal-receiving profile, the removable seal having a sealing profile that seals against one or more utility lines when installed. The hood body also has a removable cover that engages the cover-receiving profile and secures the removable seal in engagement with the seal-receiving profile. The sidewall, the removable seal, and the removable cover define an enclosure. When the removable cover and seal are removed, the sidewall defines an access opening that surrounds the plate opening.