«  ugly but effective »

It is true that this foam does not look like that found in commerce. small cell have another form it looks small iridescent bubbles but I do not know what is the comparison report between that and an acoustic foam base. but it works well. the only thing on this model "corner" is that Parisian ceilings on the corner must be cut to fit because of the moldings.
I made a model "removable" by putting a piece of wood with holes that I fitted into the wall with small nails to hang it allows the transfer or if you brought the world into the apartment in "j 'have-a-life-of-social-and-friends-I-am-not-not-enough-to-tare-to-thing-in-too-ugly-to-wall "