Houses are generally not perfectly straight. When measuring the room height, we recommend you measure in three different places (alcoves and in front of the chimney breast) and provide the smallest of the three measurements.
Please ignore skirting boards and coving (measure from wall to wall) for all measurements.
If you'd like to have hanging rails, we recommend at least 600mm of depth. Note that this is the external cabinet depth, which includes 18mm back panels and 18-20mm thick doors.
We recommend you remove the skirting boards that would be at the back of the cabinets for extra depth (otherwise there will be a void) but this is your choice.