Lincoln Service Parts 2 › Lincoln Electric 9SS21400-30 RATING PLATE (STD FREQ) S21400-30 Lincoln Electric 9SS21400-30 RATING PLATE (STD FREQ) S21400-30 Sale Price: $49.73 Original Price: $57.19 RATING PLATE (STD FREQ) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! RATING PLATE (STD FREQ) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1