A fixture in the form of a shelf that can be mounted to a support bar secured to the inner face of a refrigerator door. The shelf is telescopic and has at least two parts, a base and a platform, both being slidable upon each other and slidable along the support bar. The base and the platform have mounting means on the support bar and route-limited fitting and sliding means therebetween. The fixture allows for an increase or reduction in space of the telescoping shelf for better arranged storage of beverage cans or the like, in order to ensure versatility and safety to the arrangement of cited products.