18"x16" would be a better fit for my 2 burner. That size would allow the grease though in the front to over hang enough to use the collection system and still be large enough to cover the depth of the entire cooking surface allowing for symetrical heating. As is, much of the heat comes up behind the griddle. I did call Camp Chef before the purchase and was assured it would fit my model.
Would you recommend this product to a friend? Definitely yes