For a limited time this fall, Arby’s is taking its most craveable items and piling them onto one towering sandwich — the Arbynator.

Available in Classic, Double and Half Pound sizes, The Arbynator tops thinly sliced Roast Beef with Curly Fries, cheddar sauce, Arby’s sauce and Horsey sauce on a sesame seed bun. The double Arbynator has two times the amount of roast beef on it than the classic, and the half-pound Arbynator boasts the most roast beef of the three options.

You can get each of these three new sandwiches beginning November 19 through December 23.

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