The white bar is variably adjustable from 70 to 115 cm width and can be easily clamped between two walls. The tube diameter of 2 cm fits any shower curtain and provides extra strong support. This product comes with a 5 year warranty from the date of purchase. The warranty covers all material and manufacturing defects that affect the function. Excluded are damages caused by improper handling or natural wear and tear. This warranty does not limit your statutory warranty rights.