Comprises very heavy duty square tube framework, which assembles by the use of pre-formed corner blocks to give accurate sizing. Exactly fits the base rail of the shed. Arrives complete with brackets and long steel anchors, for internally securing the foundation kit to your chosen land area. This kit can then be flooded out with concrete, or filled with paving slabs or chippings etc. Remember to insert a polythene sheet underneath the kit before fill, to prevent rising damp conditions