I moved onto a bigger mashtun so I thought I would pass along my first one to a brewer that could use it. It is a 48 qt green Coleman cooler with a ss hose braid for a screen. I would average between 70-80% efficiency with this cooler. I would like to just give it away or perhaps you could trade a small piece of brewing equipement that I could pass along to a rookie brewer wanting to do extract brewing. I often make up starter kits for them to try the hobby out. I live in the Iowa City/Cedar Rapids so this is a local pickup.