Looking to increase the size of your using our and ? You may need to add these H-Bracket Pairs to increase the rigidity of your box. 

Box sizes 6-8 require one pair.
Box sizes 9-11 require two pairs.
Box sizes 12-16 require three pairs.

Includes:
(2) H-Brackets
(6) M5x0.8x16mm Torx Screws
(8) M5x0.8x30mm Torx Screws
(8) M5 Lock Washers
(8) M5 Nuts