Lincoln Electric 9SS31227-56 S31227-56 DIFFUSE PLATE BACKDRAFT PANEL Sale Price: $122.46 Original Price: $140.83 DIFFUSE PLATE BACKDRAFT PANEL PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Quantity: Add To Cart Added! DIFFUSE PLATE BACKDRAFT PANEL PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1