Lincoln Service Parts 1 › Lincoln Electric 9SM27638 DF FILTER DOOR ASBLY M27638 Lincoln Electric 9SM27638 DF FILTER DOOR ASBLY M27638 Sale Price: $558.50 Original Price: $642.27 DF FILTER DOOR ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! DF FILTER DOOR ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1