Our research shows that there are a total of 21 seats in Section 211 Row J at Nationals Park. As you face the field from the section, the lower numbered seats will be on the right, while the higher numbered seats are on the left.

Seating layout in Section 211 Row J
Row J has 21 seats in Section 211, with Seat 1 located at the right side of the section (as you face the field)