Modular cantilever arms for modular cantilever rack systems

A modular cantilever rack system comprising at least a pair of pre-holed supporting vertical members, at least a pair of rollout cantilever arms, each of said rollout cantilever arms comprising:

• a fixed horizontal member comprising two oppositely facing fixed parallel load-bearing surfaces, a roller mechanism and one or more interconnecting elements;
• and
• a mobile horizontal member partially encased in the fixed horizontal member comprising a roller-end engaged between the two load-bearing surfaces and a load-bearing surface supported by the roller mechanism;
• wherein the interconnecting elements of the fixed horizontal member are configured for interconnecting two supporting vertical members of the modular cantilever rack system, the load-bearing surfaces extending perpendicularly between the two vertical members and the roller mechanism being located at an end distant from the two vertical members;
• and
• a plurality of fasteners for securing respective ones of the one or more interconnecting elements from the pair of rollout cantilever arms to respective ones of the pair of supporting vertical members thereby defining a first mobile storage surface along a horizontal storage plane.