Metal catalytic combustor, fits All Ashford AF 20 and AF30, Chinook CK20 and CK30, Sirocco SC20 and SC30 and Princess Stoves PE32 

( Inserts may take different size)

10.65″ x 4″ X 2″ and comes with catalytic wrap around outside

New part number is S.CAT203032, Older part number but same item, Z0336A-M

Please note, discoloration on metal catalysts is normal. It is the catalytic coating and is not rust.