Went to Lowe's, Home Depot, local hardware stores and all splash guards said universal. Well, they were all too big. Went to place where garbage disposal was purchased and they checked internet and splash guard recommended by Insinkerator was 3 1/4 in or larger. I needed a 3"
Got internet and found the correct splash guard at Appliance Parts and it looked exactly like one I have which is GEWC3X124. Ordered two and had them within 3 days - fits perfect and never have I received something from internet so quickly. Very inpressed - now I know where to go when I need a replacement part.