1. Adjusting and fixing support for the shutters, comprising a support part (8) intended for attaching, detachably, to the cords (3) with beams and / or cords (7) lifting the louver, and the massive body (15), wherein supporting part is provided with means (10) for attaching, detachably, a massive body (15) to the support part (8) .2. Support according to claim 1, characterized in that the supporting part (8) comprises a central portion (9), at both longitudinal ends of which have end portions (11) connected rotatably with the respective end of the central part (9) by means of hinges (12) .3. Support according to claim 1, characterized in that the central part (9) is provided with elastic conjugating means (10) for attaching, detachably, a massive body (15) to the support part (8) .4. Support according to claim 1, characterized in that it comprises a cover portion (16) shaped such that the supporting part (8) and the massive body (15) can be closed, to be opened, said cover portion (16) .5. Shutters containing cords (3) with the crossbeams and cords (7) lift, and adjusting and fixing the support, described in one of p.p.1-4, to be placed under the lower plate zhalyuzey.6. Method of adjustment and fixing plate (2), the louver comprising the steps of: (a) installing pairs of cords (3) with the crossbeams and the cords (7) lifting extending downward from the upper profile louver, (b) placing detachable support part (8) on said cords (3, 7) at a predetermined distance from said top profile, (c) fixing, to be separated, the supporting part (8) on said cords (3, 7) at a specified distance from the upper profile, (d) setting, with removably array
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