Go Aluminium not Concrete
Got first one and the concrete cracked in several places immediately. Contacted seller and quick response. Sent a new one and that one has now cracked in 2 spots after being up for 1 week.  I should of listened and taken the seller up on switching to the Aluminium one instead of concrete, but loved the look of the concrete.  Great seller, just wish the concrete was more durable.
Rating: 3 stars