Closure arrangement (10) for covering and closing openings in buildings, roofs, walls, in particular for weather protection, for pergolas, for canopies, for
doors, gates and the like, comprising at least one profile arrangement (5, 5'), wherein the profile arrangement (5, 5') has at least one hollow chamber (50, 51) and at least one connecting element (3) and / or at least one connecting device (4), wherein the profile arrangement (5, 5') has at least one structural layer (6), wherein the at least one structural layer (6) has at least a portion of a polymeric material, wherein the profile arrangement (5, 5') has at least one reinforcing insert (7), preferably fully embedded in the structural layer (6), characterized in that the profile arrangement (5, 5') has a
bending stiffness about the x-axis of approximately 17 to 29 × 10 9 N / mm 2 , preferably about 18 to 22 × 10 9 N / mm 2according to DIN EN ISO 178-2019-08, the profile arrangement (5,5') has a
linear coefficient of
thermal expansion α of approximately 12 to 64 × 10 -6 / K, preferably 16 to 30 × according to DIN EN ISO 11359-2:2021-11, having the material of the at least one structural layer (6) comprising microhollow spheres consisting of a plastic shell filled with a gas.