Joule Cyclone 300 L part-plumbed high-gain heat-pump cylinder - tall/narrow. Nominal catalogue capacity: 300 litres.
Supplied with the standard G3 kit and a three-way valve partly installed onto the tank.
Underlying high-gain vessel: TCIMVH-0300LFC. Vessel body height: 1900 mm. External body diameter: 530 mm. Heat-pump coil surface area: 3 m².
These are vessel dimensions; allow additional space for the partly fitted valves, connections and servicing. See the linked manufacturer vessel specification and confirm installation clearances for your system.