In accordance with embodiments of the present disclosure, an apparatus for minimizing heat transfer may include a first member substantially planar in shape, a second member substantially planar in shape and substantially perpendicular to the first member, and a gasket mechanically coupling the first member to the second member. The apparatus may be formed such that the first member, second member, and the gasket define a plenum wherein the first member, the second member, and the gasket prevent transfer of fluid between an interior and exterior of the plenum.