A vending machine includes first and second integrated dispensing systems mounted at front portions of adjacent product shelf dividers establishing at least first, second and third product queues. Each of the first and second dispensing systems includes first and second release mechanisms having a plurality of hinged plates supported by a frame. The plurality of hinged plates are selectively shifted into and out of corresponding ones of the first, second and third product queues, such that each product queue has associated therewith two opposing release mechanisms. Preferably, at least one of the first and second release mechanisms for each dispensing system includes a queue spacing member which is mounted to one of the hinged plates and projects into the product queue to establish a desired spacing between the release mechanisms.