Roller rail systems and adjustment brackets therefor

A shelving system comprising multiple shelving regions, the shelving system comprising:

• a front horizontal support member;
• a rear horizontal support member;
• and
• a roller rail system spanning the front horizontal member and the rear horizontal member, the roller rail system comprising:
• an adjustment bracket including a first roller rail assembly support portion comprising a first U-shaped channel portion and a second roller rail assembly support portion comprising a second U-shaped channel portion adjacent the first U-shaped channel portion in a side-by-side arrangement, the first and second U-shaped channel portions each configured to receive a roller rail assembly such that the roller rail assembly slides within the respective first and second U-shaped channel portion relative to the adjustment bracket;
• a first roller rail assembly comprising a plurality of roller wheels that is received by the first U-shaped channel portion;
• and
• a second roller rail assembly comprising a plurality of roller wheels that is received by the second U-shaped channel portion;
• wherein the roller rail system has a retracted configuration where leading ends of the first and second roller rail assemblies are closer together and an extended configuration where the leading ends of the first and second roller rail assemblies are further apart;
• wherein the first and second U-shaped channel portions of the adjustment bracket have an open configuration such that the roller wheels of the first and second roller rail assemblies are exposed within the adjustment bracket in the retracted and extended configurations;
• wherein the adjustment bracket has a sidewall, the sidewall includes a bent overhang ledge extending inwardly to overhang a portion of the first U-shaped channel portion to impede vertical movement of the first roller rail assembly out of the first U-shaped channel portion to allow sliding movement of the first roller rail assembly between the retracted and extended configurations.