A feeder system for feeding a stack (101) of stackable flat, carton elements to a processing device: A delivery ramp (103) includes a receiving surface (104) on which an edge portion (111) and a center portion (116) of the stack (101) is arrangeable. A transport device (125) includes a supporting platform on which at least a further edge portion (115) of the stack (101) is supportable, wherein the supporting platform is arranged adjacent to the receiving surface (104) such that the further edge portion (115) of the stack (101) may be received. A downholder element (117), adjusts a size of a gap (705) between the downholder element and a supporting platform, such that the further edge portion (115) of the stack (101) is clampable between them. The transport device (125) is movable between the receiving position, at which the stack (101) may be received by the delivery ramp (103), and a hand over position at the processing device such that the stack (101) is movable from the receiving position to the hand over position.