This topstore spacemaster double sided 39adda39 kit is designed to be used in conjunction with the spacemaster starter kits to provide even more storage space and versatility ideally used with the mds15 kit this 39adda39 comes complete with a double sided louvered panel and 80 tc4 blue storage bins capable of holding loads of up to 8kg each providing users with a huge amount of storage space great in any workspace