Why are there two structures of L-Glucose in the Fischer projection?

We are told that L-Glucose is an enantiomer of D-Glucose, which would mean that they are mirror images of each other. But then we're also told that the L and D forms is determined by the spacial relationship to glyceraldehyde.

Which of the structure is correct? Are they the same?

• Strictly on the left there is not a projection. It is a projection like every other structural formula – Alchimista Jan 5 at 8:47