Lincoln Service Parts 1 › Lincoln Electric 9SM20521 MUFFLER BLANKET M20521 Lincoln Electric 9SM20521 MUFFLER BLANKET M20521 Sale Price: $2,840.59 Original Price: $3,266.68 MUFFLER BLANKET PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! MUFFLER BLANKET PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1