Due to a change of plans I have a quantity of these for sale, lightly used.
Collection very much preferred from WV8 postcode (near Wolverhampton, UK). Also happy to work with a man and van service such as shiply.com
They are approx 430mm long, 150mm high (plus terminals) and 70mm wide - see photos.
M8 terminals. Have bus bars and screws. £149 but a discount available for quantity.