Aluminum Channel- Cut Pieces

Bought these at Home Depot to mount 2’ x 4’ plastic lattice.
Cut them, but then the decorator changed the design.
1/2” X 1/2” Black – 2 pcs. 1 X 24”, 1 X 26”
3/4” X 3/4” Clear – 2 pcs. 1 X 30”, 1 X 65”
$ 5.00 each or BO.