No disk to install OS to on iMac
I just received an iMac as a gift and it was wiped before given to me. When trying to install OS X El Capitan on it there is no disk listed to install it to. I ran first aid on everything listed on Disk Utility and it all appears to be good. I've attached a photo of Disk Utility showing what I've got. Am I missing anything? I'm not sure how to move forward from here. Please help! Thank you!
iMac Line (2012 and Later)