The Flextank Stacker Tanks are designed for optimal use of cellar space! Flextank Stackers are perfect for maximizing storage space and are the most ideal vessel for maintaining quality when transporting your product. All Flextank Stacker Tanks are cubical with a frame that makes them a breeze to stack and store, include our unique clamp lid system, and are offered in your choice of standard maturation weight or heavyweight options.