Abstract Depending on a field study for one of the largest iron and paints warehouses in Egypt. this paper presents a new multi-item periodic review inventory model considering the refunding quantity cost. Through this field study. we found that the inventory level is monitored periodically at equal time intervals. https://www.ngetikin.com/flash-choice-1-Gallon-Roll-Cote-High-Performance-Moisture-Vapor-Barrier-Coating-and-Primer-limited-super/