Garden Storage box (Oadby LE2)

Hi friends. Just wondering if anyone has one of those plastic waterproof garden storage boxes please? Something which is big enough to fit things like a mower and gardening tools (so roughly 4ft to 6ft wide, 3ft or 4ft deep and 3ft or 4ft high... or in metric that's roughly 1.2m to 1.8 wide, 0.9m to 1.2m wide and 0.9m to 1.2m high). Ideally if it can be taken apart for transport, else I don't have a car big enough to move it. Thanks in advance.