How are hutch shelves supported in a closed cabinet section?

In closed cabinet hutch sections, shelves rest on 5 mm shelf pins inserted into pre-drilled 32 mm grid holes along the inner side panels. Pins are spaced at 1.25 in. increments and each pin should have a load rating of 15–25 lbs., with four pins per shelf. Premium hutches use metal shelf pin-clip systems that lock the shelf to prevent dislodging. OfficeFurniture2go.com supplies hutches with quality shelf pin systems — call 1-800-460-0858.