The 0.197" (5.00 mm) pitch and 0.244" (6.20 mm) row spacing give it the cavity real estate for power-class contacts — this is not a signal-density shell.
Contacts Not Included — Order Them Separately
The housing ships empty — the listing note states Contacts Not Included. You need the matching Power Key crimp socket terminals to populate the 6 cavities. Without the contacts, this is just a shell. Make sure your BOM line for 1376393-1 has a companion line for the TE Power Key socket contacts (typically ordered by wire gauge range).