A Foundation For Constructing Dimensions 12×10 Quick and Easy Standard Shed Base. Establish a foundation for a garden structure by utilizing an EcoBase Quick and Easy Base Kit. Serving as a sustainable alternative to paving slabs or liquid concrete mixtures, Ecobase Fastfit consists of reused grids that link together to deliver a sturdy, durable, enduring, and properly-drained foundation for your garden structure. Foundation For Constructing Dimensions 12×10 Quick and Easy Standard Shed Base