Size shall be specified in connection with the grade in terms of minimum diameter, range in diameter, minimum diameter with a percentage of a certain size or larger, or in accordance with one of the size classifications listed below: Provided, that unless otherwise specified, onions shall not be less than 1 1/2 inches in diameter, with 60 percent or more 2 inches or larger in diameter.
    
    
        
            
                
                
                
                
                    
                    
                    
                    
                
            
            
                | Small | 
                1 | 
                25.4 | 
                21/4
                 | 
                57.2 | 
            
            
                | Repacker/Prepacker 1
                 | 
                13/4
                 | 
                44.5 | 
                3 | 
                76.2 | 
            
            
                | Medium | 
                2 | 
                50.8 | 
                31/4
                 | 
                82.6 | 
            
            
                | Large or Jumbo | 
                3 | 
                76.2 | 
                (2) | 
            
            
                | Colossal | 
                33/4
                 | 
                95.3 | 
                (2) | 
            
            
                | 
                    1 In addition to the sizes specified, a lot of onions designated as Repacker or Prepacker shall contain at least 60 percent or more 2 inches or larger in diameter. | 
            
            
                | 
                    2 No requirement. |