Screening arrangement comprising means for mounting side rails and method of mounting such a screening arrangement

A screening arrangement (1) adapted to be mounted in a frame (2) to obtain a mounted position, consisting of a top element (4) including a cover (430) extending, in the mounted position, in a first longitudinal direction defining a width direction, two side rails (8, 9), each side rail extending, in the mounted position, in a second longitudinal direction defining a height direction, a set of angular brackets (85), a screening body (6) including a first end edge, a second end edge and side edges, and a bottom element (7), the first end edge being accommodated in the top element (4)) and the second end edge being fastened to the bottom element (7), said bottom element being movable between a non-screening position close to the top element and a screening position at a distance from the top element, and a center between the two side rails and below the top element, said first and second longitudinal directions defining a plane, characterized in that said top element (4) is provided with a top rail (440) forming the front side of the top element and being connected to the cover (430) of the top element (4), said top rail (440) extending in said first longitudinal direction between a first mitred end and a second mitred end, each of said side rails (8, 9) having a first end and a second, mitred end, the second, mitred end of each side rail (8, 9) being adapted to be joined to the first mitred end and the second mitred end, respectively, of said top rail (440), wherein each angular bracket (85) has a first leg (850) and a second leg (860), said first and second legs (850,860) being positioned substantially in parallel with said plane in the mounted position, and wherein each angular bracket cooperates with reception means in the back side of the top rail (440), between the cover and the center of the screening arrangement, and in the back side of the respective side rail (8, 9), wherein said reception means comprises a track in the back side of the top rail (440) and a track in the back side of each side rail (8,9).