Frozen food was shipped in this.
Useful if you have stuff to keep cool, or possibly for other purposes (I've seen them used as planters).
It measures about 17" X 13" and about 9" high.
It's reasonably sturdy (but I wouldn't try standing on it). Photo with tape measure and curious dog for scale.
In Morningside.
Big Polystyrene Box with Lid (Comiston EH10)
This offer has been gifted to someone and is no longer available.