Eclipse® Library Shelving Mobile Units have become a modern day norm for all libraries. Eclipse® Mobile shelving is mounted on strong dual wheel castors and have heavy duty cross braces. Eclipse® library shelving has been tested to Australian Standards, A lot of the competitors claim to meet the standard or claim to be made to it, but Are not Certified, Make sure you get the shelving that is Certified "Eclipse", Feeling Green, Well you can rest assured Eclipse® library shelving wil not let you or the Environment down, Eclipse is certified to the highest level GECA (Green Environment Council of Australia) standard.