Groundwork For Building Size(s) 16×8 Quick-fit Standard Shed Base. Establish a foundation for a backyard structure using an EcoBase Quick-fit Base Kit. Serving as an eco-conscious substitute for paving stones or poured concrete, Ecobase Quick-fit consists of reused frameworks that link together to supply you with a sturdy, durable, enduring, and well-drained base for your backyard structure. Foundation For Constructing Size(s) 16×8 Quick-fit Standard Shed Base