Lincoln Service Parts 1 › Lincoln Electric 9SM21011-1 CONTROL BOX COVER M21011-1 Lincoln Electric 9SM21011-1 CONTROL BOX COVER M21011-1 Sale Price: $137.43 Original Price: $158.05 CONTROL BOX COVER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! CONTROL BOX COVER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1