Are very satisfied, fits perfectly into the GGL304 and caused unlike the original blinds no crater in the window, but finer holes which could then be zugespachtelt loose, you would have without the blinds leave a rented apartment. It really is pitch black when the blinds are not to, dense and enormously entertained by the silver reflector outside much heat from. Long-term test, we do not have a will, may be added. Have one more pair of purchases for the next bedroom ;-)
