A window for installation in a roof structure that includes a number of mounting brackets

A window (1) for installation in a roof structure, comprising a frame with an upper member (2), a lower member (3) and two side members (4, 5) and a plurality of mounting brackets (10) , each mounting bracket (10) comprising a first portion (11) of the upright for connection with a member (2, 3, 4, 5) of the associated frame and a second portion (12) of the upright essentially perpendicular to the first portion ( 11) of the upright for fixing to the roof structure, and wherein the first portion (11) of the upright includes at least one section (11a, 11b) of the upright adapted for connection with a member (2, 3, 4, 5) of the frame, the window (1) being adapted for installation in at least two predefined installation levels in said roof structure, said at least one section (11a, 11b) of the upright of the first portion (11) of the upright comprising a flange (30) which is essentially perpendicular to said at least one section (11a, 11b) of the upright, wherein the upper and lower members (2, 3) each comprise at least a first slot (7) that extends substantially longitudinally and that the side members (4, 5) each comprise at least a second slot (8a, 8b) that extends substantially longitudinally, said first and second slots (7, 8a, 8b) defining said predefined installation levels, said at least a first slot (7) of the members (2, 3) of the upper and lower frame a first installation level, and defining the at least one second slot (8a, 8b) of the members (4, 5) of the side frame a second installation level, so that when all of said plurality of mounting brackets (10) are mounted on the upper and lower members (2, 3) of the frame or on the respective side members (4, 5) of the frame , each of said mounting brackets (10) is placed with said flange (30) in engagement with one of the first and second slots (7, 8a, 8b), the window (1) being able to be installed at the installation level which corresponds to one of the first or second slots (7; 8a, 8b), characterized in that there is no slot in the side members (4, 5) of the frame at the same level as the level of the at least one first slot (7), and because there is no slot in the lower members ( 2, 3) of the frame at the same level as the level of the at least one second slot (8a, 8b).