Will do up to 295 cm wide. BS EN 13120. BLIND DISPATCHED OUTSIDE THE UK. IT IS YOUR RESPONIBILITY TO ENSURE THAT THE BLIND IS FITTED AS INSTRUCTED. BS EN13120:2009 A1:2014 Window Blind Safety. You would need to decide how high you want the blind to be taking into consideration any lengths of wood etc and where you want to place it and also where you want the hem of the blind to sit – either on the windowsill or longer -again this will depend if your windowsill protrudes out or not.