Those are definitely LOIN BACK ribs. Too large to be baby backs.
Just to clear up any confusion created by the above statement. Baby back ribs are tiny loin back ribs, typically less than 1.75lbs per rack. Same cut, smaller pig.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)