Extraordinarily heavy!  Had a professional install to be sure it would be secure as it is as heavy as a cabinet.  The screws they provide are a joke, there is no way they would support this rack, especially once things are added to it.  Also the directions say to put the screws through the pre-drilled holes- there were no predrilled holes.  Looks great though now that it's up.  I painted and treated it to match my decor.  Only really needed one though.