Manufacturer Name: LGE Product Number: 4975JJ2028D OEM Part Number: 4975JJ2028D Product Description: Guide Assy-Rail The LG 4975JJ2028D Refrigerator Rail Guide Assembly is a replacement part that will help the proper arrangement of refrigerator shelves. It helps in positioning the fridge’s slide-out shelves/bins to facilitate they slide-in and sliding out process. https://www.hnkparts.com/4975jj2028d-lge-guide-assy-rail