A connection arrangement for connecting a winding shaft box of a building opening shadowing device with a window or door frame, comprising: a bottom board profile connectable to the winding shaft box and an adapter profile which can be attached to a horizontal strut of the frame, which strut is at the top in the installed state, wherein the adapter profile has a base plate seated on the horizontal strut and a plurality of engagement projections (23, 24), in particular two thereof, which, protruding from the bottom board profile, are spaced apart from one another and are parallel to each other and can be brought into engagement with a corresponding plurality of counter-engagement projections (21, 22) protruding from the bottom board profile to the adapter profile in order to connect the winding shaft box at its bottom board profile to the frame-side mounted adapter profile, wherein the engagement projections (23, 24) of the adapter profile are designed as hook strips (23, 24) which are open towards the top in the case of an adapter profile mounted on the horizontal strut in the frame disposed with the outer side facing upwards, and the counter-engagement projections (21, 22) of the bottom board profile are designed as counter-hook strips (21, 22), which, when attaching the winding shaft box with its bottom board profile laterally from the top to the adapter profile, are open in the downward direction and can be hooked into the upwardly open hook strips (23, 24) of the adapter profile, characterized in that at least one of the engagement projections (23, 24) has a latching projection projecting therefrom, to which a counter-latching projection is assigned at one of the counter-engagement projections (21, 22), which during the mounting pushes in attack on the latching projection and resiliently pushes past said projection into rear engagement, wherein the latching projection protrudes on an outer side of the engagement projection, which faces in the downward direction when the frame lies in the mounting position and the adapter profile is mounted thereon. a bottom board profile connectable to the winding shaft box and an adapter profile which can be attached to a horizontal strut of the frame, which strut is at the top in the installed state, wherein the adapter profile has a base plate seated on the horizontal strut and a plurality of engagement projections (23, 24), in particular two thereof, which, protruding from the bottom board profile, are spaced apart from one another and are parallel to each other and can be brought into engagement with a corresponding plurality of counter-engagement projections (21, 22) protruding from the bottom board profile to the adapter profile in order to connect the winding shaft box at its bottom board profile to the frame-side mounted adapter profile, wherein the engagement projections (23, 24) of the adapter profile are designed as hook strips (23, 24) which are open towards the top in the case of an adapter profile mounted on the horizontal strut in the frame disposed with the outer side facing upwards, and the counter-engagement projections (21, 22) of the bottom board profile are designed as counter-hook strips (21, 22), which, when attaching the winding shaft box with its bottom board profile laterally from the top to the adapter profile, are open in the downward direction and can be hooked into the upwardly open hook strips (23, 24) of the adapter profile, characterized in that at least one of the engagement projections (23, 24) has a latching projection projecting therefrom, to which a counter-latching projection is assigned at one of the counter-engagement projections (21, 22), which during the mounting pushes in attack on the latching projection and resiliently pushes past said projection into rear engagement, wherein the latching projection protrudes on an outer side of the engagement projection, which faces in the downward direction when the frame lies in the mounting position and the adapter profile is mounted thereon.