A downspout end cover protects and closes a lower end of a cylindrical rain gutter downspout assembly. The cover includes a body that forms a continuous hollow channel for passage of collected rainwater. An aperture at the back of the body is sized to attach to the downspout, and a front cylindrical or oval aperture emits collected rainwater. A door is rotatably attached to the front of the body at a top of the front of the body by a hinge and when closed, prevents entry of animals, insects or blown debris. The front of the body may be sloped and the door may rest against an inset ledge that protects the door and seals the downspout end cover against entry of insects and preventing detachment of the door from the body. The hinge may be offset from the back surface of the door by an arm.

A downspout drain filter includes a housing and a filter media. The housing defines an internal cavity, an inlet to the internal cavity along a top of the housing, and an outlet from the internal cavity along a bottom of the housing. The filter media is disposed within the internal cavity. The filter media divides the internal cavity into an upper chamber and a lower chamber. The filter media is configured to trap debris in the upper chamber from fluid flowing downward through the internal cavity. The filter media is permeable such that the fluid flows from the upper chamber to the lower chamber.

A downspout extension system for a terminal end of a downspout is provided. The downspout extension system can include a collar member, an enclosure member, and an extension member. The collar member can include a first end being open and a second end being closed. The collar member can include a first tab disposed directly across from a second tab. The enclosure member can be selectively slidably disposed in the first end of the collar member. The extension member can be disposed on the collar member. The extension member can include a first aperture configured to receive the first tab and a second aperture configured to receive the second tab. The collar member and the enclosure member can together be configured to receive the terminal end of the downspout and to securely hold the terminal end between the collar member and the enclosure member with mechanical force.

A downspout drain filter includes a housing having walls. The walls define an internal cavity operable to receive a filter media, an inlet to the internal cavity, and an outlet from the internal cavity. The walls include a sloped surface extending into the internal cavity along an intersection between a first of the walls and a second of the walls such that the internal cavity tapers in a direction that extends from the inlet to the outlet along the sloped surface.

An elbow connection includes a first conduit, a second conduit, and a bend. The first conduit defines a first open end. The first open end is configured to connect to a first external component and establish fluid communication between the first conduit and the first external component. The second conduit defines a second open end. The second open end is configured to connect to a second external component and establish fluid communication between the second conduit and the second external component. The bend extends between the first and second conduits. The bend defines a channel extending between the first and second conduits. The channel establishes fluid communication between the first and second conduits. The bend has a ramped surface that at least partially defines the channel and extends between the first and second conduits. The bend orients the first conduit at an angle relative to the second conduit.