My G.F.'s 30 qt? Engel is 18 1/2" by 12 1/2", sorta close.I you can't find the cooler size you want, you could get a drop bag from Tuff river Stuff, then use the space next to it for other things, like a back up 12 pack or water jug? Starting to really dig having a drop bag for organizing my stuff in the small boat.
"Everything is written in the book of nature. This book is always open."