What is needed in the cabinetry for a built-in coffee system?

Plumbed built-in coffee systems (Miele, Wolf, Jura) require a dedicated 20A circuit, a 1/4" braided water supply line with an accessible shut-off, and ideally a gravity drain or removable drip tray. The cabinet opening is typically 24"W × 24"H. If the unit is stacked below a wall oven, a ventilation gap or "chimney" must be designed into the carcass to prevent heat from the oven migrating into the coffee machine electronics.