Big Green Egg Modular Expansion FrameBuild your outdoor kitchen one step at a time with the NEW Big Green Egg Modular Nest System! Start with an EGG Frame, then add to your custom EGG display with Expansion Frames and a variety of beautiful and functional inserts. You wont believe all of the possibilities! Build an outdoor workspace which can be tailored for size and style. Start now and add on at a later date. All inserts are standardized the same insert will fit into the top frame and