I am going to be fitting venetian blinds on some windows. The windows have secondary glazing so this means the blinds are going to need to come out about 4cm from the window frame so it will miss the secondary glazing. Also the gap between the top architrave and secondary glazing where you would usually fit the blind brackets is only approx 3cm so may need a thin type of bracket to fit in there. I would order the blinds soon but I don’t think the standard fitting brackets will be any good for this window. Is there a certain type of fitting bracket I could buy separately and use for this or are all brackets made specially for one type of blind? Otherwise if there is another way round the problem please let me know your ideas.