According to their website:
All Fuel Stainless Steel Kit
Part Number: 2ZFLKIT
Stainless Steel liner kit for oil, gas, pellet, and wood. Available in 2", 3", 4", 5", 5.5", 6", 7", 8", 9", 10" diameters.
Kit must be insulated for wood burning applications. larger diameters available upon request.
http://www.novaflex.com/productcart/pc/viewPrd.asp?idcategory=117&idproduct=400
Stainless Steel Chimney Liner Kits For Oil,Gas & Pellet Stoves
Part Number: 2OILKTX
Available In 3", 4", 5", 5.5", 6", 7", 8", 9", 10" Larger sizes available upon request. Alloy 316 Titanium. Patented airtight triple lock construction is tested and listed by UL
http://www.novaflex.com/productcart/pc/viewPrd.asp?idcategory=38&idproduct=399
Make sure you use the right one & there is no miss communication.Can get confusing as I am sure each dealer assigns their own part # to the same product.