Abstract: A wall penetration panel with a cover plate made of a corrosion-resistant material and having a first side surface, a second side surface and an edge surface adjacent to the first side surface and the second side surface; a first gasket having a first side surface, a second side surface, and a second gasket opening between the first side surface and the second side surface, the first side surface adjacent to the second side surface of the cover plate; a frame made of a corrosion-resistant and having a first side surface, a second side surface, and a frame opening between the first side surface and the second side surface, the first side surface being adjacent to and in contact with the second side surface of the first gasket, the frame have an depth and a thickness, and a rolled end having a partially cylindrical surface defining a partially cylindrical volume intersecting the edge surface of the cover plate; and a second gasket having a first side surface, a second side surface, and a first gasket opening be

Abstract: The present invention is a roof drain assembly that comprises a dome mounted to a drain body by shock arrestors and a roof clamp that is securable to the drain body. A screen is positioned around the inlet and between the drain body and the dome. The shock arrestors and screen permit the dome to compress against the drain body while simultaneously absorbing the energy from an impact. As the shock arrestors compress, the screen also compresses. The resiliency of the screen and the shock arrestors permit the dome assembly to return to its passive state once the compression force is removed.