Attaching the long support bars to the posts
A
B
B
AA
CC
A
C
C
C
C
AA
A
CC
Connect the long support bars (B) to the posts (A) using M6x15 bolts (AA) and washers (CC) at each corner.
Attaching the short support bars to the posts
Connect the long support bars (C) to the posts (A) using M6x15 bolts (AA) and washers (CC) at each corner.