A clip assembly (70; 300) configured to securely connect a first structural component (82; 322) to a second structural component (84; 330), the clip assembly comprising: an arc attachment member (10; 250) including a panel-securing portion (12; 254) integrally connected to a securing arc (14; 252) having a semi-circular rim (30; 256), wherein the panel-securing portion (12; 254) is configured to be secured to one of the first or second structural components (82, 84; 322, 330); and an arc-receiving member (40; 200) including an arc-receiving portion (42; 204) configured to receive the securing arc (14; 252) through multiple directions, wherein the arc-receiving member (40; 200) is configured to be secured to the other of the first or second structural components (82, 84; 322, 330), and wherein the securing arc (14; 252) is configured to be pivotally adjusted with respect to the arc-receiving portion (42; 204), wherein the panel-securing portion (12; 254) includes a planar base, the securing arc (14; 252) having the semi-circular rim (30; 256) extending through a sweeping arc from a lower surface of the planar base from a first end of the planar base to a second end of the planar base, and an internal fin (34; 258) connected to and extending from internal areas of the semi- circular rim (30; 256), wherein the internal fin (34; 258) is recessed with respect to the semi-circular rim (30; 256) and wherein the thickness of the internal fin (34; 258) is less than that of the semi-circular rim (30; 256), characterized in that the internal fin (34; 258) is integrally connected to the semi-circular rim (30; 256) and extends from the internal areas of the semi-circular rim (30; 256) to the lower surface of the planar base between the first and second ends (31, 32), and in that the arc-receiving portion (42; 204) comprises opposed flexible and resilient arc-retaining members (48; 208) defining an arc-receiving channel between them, the arc-retaining members (48; 208) configured to be spread apart by the semi-circular rim (30; 256), when the securing arc (14; 252) is urged between the arc-retaining members (48; 208), to receive the semi-circular rim (30; 256) within a rim-retention space, and configured to snap back, when the semi-circular rim (30; 256) is positioned within the rim-retention space, thereby trapping the semi-circular rim (30; 256) within the rim-retention space. an arc attachment member (10; 250) including a panel-securing portion (12; 254) integrally connected to a securing arc (14; 252) having a semi-circular rim (30; 256), wherein the panel-securing portion (12; 254) is configured to be secured to one of the first or second structural components (82, 84; 322, 330); and an arc-receiving member (40; 200) including an arc-receiving portion (42; 204) configured to receive the securing arc (14; 252) through multiple directions, wherein the arc-receiving member (40; 200) is configured to be secured to the other of the first or second structural components (82, 84; 322, 330), and wherein the securing arc (14; 252) is configured to be pivotally adjusted with respect to the arc-receiving portion (42; 204), wherein the panel-securing portion (12; 254) includes a planar base, the securing arc (14; 252) having the semi-circular rim (30; 256) extending through a sweeping arc from a lower surface of the planar base from a first end of the planar base to a second end of the planar base, and an internal fin (34; 258) connected to and extending from internal areas of the semi- circular rim (30; 256), wherein the internal fin (34; 258) is recessed with respect to the semi-circular rim (30; 256) and wherein the thickness of the internal fin (34; 258) is less than that of the semi-circular rim (30; 256), characterized in that the internal fin (34; 258) is integrally connected to the semi-circular rim (30; 256) and extends from the internal areas of the semi-circular rim (30; 256) to the lower surface of the planar base between the first and second ends (31, 32), and in that the arc-receiving portion (42; 204) comprises opposed flexible and resilient arc-retaining members (48; 208) defining an arc-receiving channel between them, the arc-retaining members (48; 208) configured to be spread apart by the semi-circular rim (30; 256), when the securing arc (14; 252) is urged between the arc-retaining members (48; 208), to receive the semi-circular rim (30; 256) within a rim-retention space, and configured to snap back, when the semi-circular rim (30; 256) is positioned within the rim-retention space, thereby trapping the semi-circular rim (30; 256) within the rim-retention space.