Concertina Window Blinds

Hi, I had to take one off the wall in a previous van due to a broken part, it was quite easy, one screw in each corner of the frames, behind the corner cap piece, just keep the frame together, you will / may need another pair of hands, as it’s a pain to put all the bits back together if they come all apart, then lay it on the table, there is no tension in the frame. All it is, is a cord that has a knot in the top corner that runs down the side across the blind ( in the metal bit that you hold to adjust it) then down the opposite side and is tied in the diagonal corner to where it started, then there’s a cord the does the opposite diagonal route.

just undo the cord and tie it a bit tighter, quite simple, hardest bit is holding the frame square when in your hands ( you’ll see what I mean) hence the second pair of hands