broken glass Inside of oven door

Removed Door- Removed outer stainless cover(6 screws) Removed the 1st 2 glass pieces. realized that there were 4 pcs of glass, not 2 as I thought. Found 2nd assembly of 2 pcs, of glass. The piece i ordered that was called inner actually only fit on the inside of the the two outer pcs, too small to replace what was the outer piece on the inside of the door. Called, returned 1st piece, got the correct one and reassembled.
Would have been easier if parts had more understandable labels such as inner door outside glass etc
beware when you order!