Type 21, No. 4 Border
Dimensions in units:
Outside: 44 wide by 56 high: inside, 28 wide by 40 high
Segment is 8 wide by 8 high (6, if measured between midpoints)
border is a kind of combination of two No. 3 borders (on the outside sections)
and one No. 1 border (in the center section).
This design is shown in my border collection under No.'s 3 & 4 Borders and Panels.