This FB is perfect for a 10-gallon Rubbermaid Cooler Mashtun. I have used it about 5 times. Only reason I am selling is I upgrade my Mash Tun to a 17-gallon Mash Hawk. Bought it for about $35.00 with shipping. I will let it go for $20.00 plus shipping. Hit me with a PM if you are interested.