Bisley Shelving Extension Kits fit to your Bisley Shelving Kit. Extension kits allow you to construct the shelving unit you need for your home or office. This extension kit is easy to assemble yourself and requires only one screwdriver to complete. Fully pocketed shelf clips and smooth, roll formed edges keep this shelving kit secure for all your stocked items as well as all users. Each shelf takes a 90kg load allowing you to store a high capacity on your shelving unit.