Electric Service Mast flashings can be replaced easily using this closing door technology and simple slide on from the side design. Use the Retro-Spin Flashing during scheduled roof repair Maintenance or as part of an entire re-roof project. A Retro-Spin Flashing is a tightly fitted interior and exterior impact extruded galvanized roof flashing. Retro-Spin Flashings are impact extruded from 24-Gauge galvanized steel and have no soldered seams, ugly zippers nor can any parts be damaged by ultraviolet sun exposure. Spin flashings have a conical shape that is 3 in. tall complemented by a normal sized 4 in. horizontal flange or skirt. The base width dimension is about 15 in. Dia, The Retro-Spin Flashing is installed into a roof system using National Roofing Contractor Association (NRCA), and every other roofing materials manufacturers, standard installation specifications for pipe flashings which include shingle fashion placement and nailing attachment into a roofing system. The patented design permits the interior flashing to rotate freely within the confines of the exterior flashing. Pre-punched access slots, through the side, create a door that is closed when the flashing is rotated 180°. A galvanized steel Retro-Spin Flashings can be primed and painted to match any roof color.