My company, Pansaver, actually sells these 18 Qt. Electric Roaster Liners.
Please call 877-726-7287 for more information.
It appears that rival has discontinued the 16 quart size roaster oven. There are no replacement parts to be found for any roaster oven at the Rival website. And I have found any aftermarket supplier.
44servings 55 cups
144 1/2 cup servings
www.nesco.com Look under customer support and you can download the owner's manual.
A Rival Roaster is an electric roasting pan. The 18 quart version can hold an 18 lb turkey. It costs around $50 to purchase. The main benefit to owning one, is that the oven is free to cook pies or side dishes during Thanksgiving.
Most 18 quart roasters suggest you stick with 16 pounds or less. It depends somewhat on the shape of the bird. But it cooks best if there is 1 inch or more between each wall and the lid, and the turkey.
One can purchase a cheap Masterbuilt 28 Quart Electric Turkey Fryer from several online stores. Some of these stores are QVC, Gander Mountain, Amazon and eBay.
I would doubt very much if you can get any replacement parts. However, stores like Source often have items like universal replacement knobs.
There is one quart in a quart .
The quart (1 quart = 2 pints )
quart
There are a lot of ways to convert quart into the compatible units. Some of the conversions are:1 quart = ¼ gallons1 quart = 2 pints1 quart = 4 cups1 quart = 32 fl oz1 quart ≈ 57.75 in³