This topstore spacemaster single 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 mss15 kit this 39adda39 comes complete with a single side louvered panel and 40 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