CFR›Title 13›Chapter I›Part 121›Subpart A›Subject Group Appeals of Size Determinations and NAICS Code Designations ContainsSections 121.1101–121.1103CorpusDaily eCFRDisplayed edition2026-05-08Last updated2026-05-08 Sections 121.1101 § 121.1101 Are formal size determinations subject to appeal? 121.1102 § 121.1102 Are NAICS code designations subject to appeal? 121.1103 § 121.1103 What are the procedures for appealing a NAICS code or size standard designation? Next Procedures for Size Protests and Requests for Formal Size Determinations Procedures for Size Protests and Requests for Formal Size Determinations