Sorry for the delay several peolple have asked.
36" x 12.5" footprint.
First baffle is about 9" from the side. It is elevated 1 inch off of the bottom and it is 8" tall. The second baffle is about 3 inches away and is 5". So water goes under the first baffle and over the second. I hope that helps.
The Necessity of Heatproof Mats in Protecting Cookhouse Surfaces