Abstract: A corner connector for connecting adjacent hollow intermediate frames used in the construction of insulated glass panels. The corner connector includes a two-part body having a flexible mid-portion. One end of each body portion has a retaining arm. When each retaining arm of each corner connector positioned along a longitudinal center connected to an intermediate frame it holds or secures the hollow intermediate frames together. The two hollow intermediate frames can then be moved toward each other to form a ninety degree angle therebetween. The resilient mid-portion of the body of the corner connector may be locked in place to maintain that perpendicular relationship. Therefore four intermediate frames may be positioned along the same longitudinal line during manufacturing.