Abstract: A panel configured for attachment to a mounting surface includes raised faces extending between upper and lower edges thereof. The raised faces define a face plane. A shoulder is defined on the raised faces adjacent the upper edge and is spaced from the mounting surface by a shoulder offset. The face plane is also spaced from the mounting surface by the shoulder offset. Keyways are defined between the raised faces and recessed from the face plane. The keyways are spaced from the mounting surface by a bottom keyway offset adjacent the lower edge. The bottom keyway offset is substantially equal to the shoulder offset. Therefore, the face plane of the raised faces at the upper edge of the panel is spaced from the mounting surface by substantially the same distance as the keyways are spaced from the mounting surface at the lower edge of the panel.

Abstract: A panel for attachment to a mounting surface includes a plurality of raised faces formed and extending between an upper edge and a lower edge of the panel, and a plurality of recessed keyways defined between each of the raised faces. The panel may have a recessed base at the lower edge of the keyways defining a fold lip adjacent the mounting surface, and a full base formed at the lower edge of the raised faces and extending beyond the recessed base.

Abstract: An elongated utility receiver is configured to receive a panel. The utility receiver includes an inner wall that is configured to be attached to a mounting surface, a transverse wall extending away from the inner wall, and an outer wall extending from the transverse wall opposite the inner wall. The outer wall is spaced from the inner wall. A channel is defined by the inner wall, outer wall, and transverse wall and defines a total offset gap between the outer and inner walls. The channel is configured to receive a portion of the panel. A biasing element is flexibly attached to the outer wall and extends toward the inner wall. The biasing element variably closes the channel to an effective gap that is less than the total offset gap. The biasing element is configured to bias the panel element toward the inner wall.

Abstract: A panel configured for attachment to a mounting surface includes raised faces extending between upper and lower edges thereof. The raised faces define a face plane. A shoulder is defined on the raised faces adjacent the upper edge and is spaced from the mounting surface by a shoulder offset. The face plane is also spaced from the mounting surface by the shoulder offset. Keyways are defined between the raised faces and recessed from the face plane. The keyways are spaced from the mounting surface by a bottom keyway offset adjacent the lower edge. The bottom keyway offset is substantially equal to the shoulder offset. Therefore, the face plane of the raised faces at the upper edge of the panel is spaced from the mounting surface by substantially the same distance as the keyways are spaced from the mounting surface at the lower edge of the panel.

Abstract: A panel configured for attachment to a mounting surface includes a plurality of raised faces that are formed between an upper edge and a lower edge of the panel. A shoulder is defined on the raised faces adjacent the upper edge and is spaced from the mounting surface, when assembled or attached thereto, by a shoulder offset. A plurality of keyways are recessed between each of the raised faces and are spaced from the mounting surface by a bottom keyway offset adjacent to the butt edge. The bottom keyway offset is substantially aligned with the shoulder offset.

Abstract: A panel for attachment to a mounting surface includes a plurality of raised faces formed and extending between an upper edge and a lower edge of the panel, and a plurality of recessed keyways defined between each of the raised faces. The panel may have a recessed base at the lower edge of the keyways defining a fold lip adjacent the mounting surface, and a full base formed at the lower edge of the raised faces and extending beyond the recessed base.

Abstract: A panel for attachment to a mounting surface includes a plurality of raised faces formed and extending between an upper edge and a lower edge of the panel, and a plurality of recessed keyways defined between each of the raised faces. The panel may have a recessed base at the lower edge of the keyways defining a fold lip adjacent the mounting surface, and a full base formed at the lower edge of the raised faces and extending beyond the recessed base. The fold lip provides a reaction point for an under lap extending from the lower edge toward the upper edge. The panel may include a lock flange formed at the upper edge. The lock flange defines a lock slot between layers of the panel, and closes the lock slot to substantially zero depth at a first touch point and a second touch point.

Abstract: A panel for attachment to a mounting surface includes a plurality of raised faces formed and extending between an upper edge and a lower edge of the panel, and a plurality of recessed keyways defined between each of the raised faces. The panel may have a recessed base at the lower edge of the keyways defining a fold lip adjacent the mounting surface, and a full base formed at the lower edge of the raised faces and extending beyond the recessed base. The fold lip provides a reaction point for an under lap extending from the lower edge toward the upper edge. The panel may include a lock flange formed at the upper edge. The lock flange defines a lock slot between layers of the panel, and closes the lock slot to substantially zero depth at a first touch point and a second touch point.

Abstract: A panel configured for attachment to a mounting surface includes a plurality of raised faces that are formed between an upper edge and a lower edge of the panel. A shoulder is defined on the raised faces adjacent the upper edge and is spaced from the mounting surface, when assembled or attached thereto, by a shoulder offset. A plurality of keyways are recessed between each of the raised faces and are spaced from the mounting surface by a bottom keyway offset adjacent to the butt edge. The bottom keyway offset is substantially aligned with the shoulder offset.