FG450, 1-3/4″ X 4-1/2″ – Vertical Mullion
FG451, 2″ X 4-1/2″ NON-THERMAL – Vertical Mullion
FG451T, 2″ X 4-1/2″ THERMAL – Vertical Mullion
FG450, 1-3/4″ X 4-1/2″ – Vertical Mullion
FG451, 2″ X 4-1/2″ NON-THERMAL – Vertical Mullion
FG451T, 2″ X 4-1/2″ THERMAL – Vertical Mullion