Lincoln Service Parts 1 › Lincoln Electric 9SM12590 CONTROL BOX INSULATION M12590 Lincoln Electric 9SM12590 CONTROL BOX INSULATION M12590 Sale Price: $43.77 Original Price: $50.33 CONTROL BOX INSULATION PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! CONTROL BOX INSULATION PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1