Composite decking/shelf

[Sir Bagalot]

I need to replace an outside wooden shelf.

The wood hasn't lasted very long and I was going to ideally replace it with a composite shelf. Initially the idea was to use composite decking and I can easily find planks that are 150mm wide, but does anyone know where I can get a wider plank, or shelf, that is 250mm+ ?

[Ham_and_Jam]

2 x planks are 300mm.

Csn you not join / butt them up?

[Sir Bagalot]

I can, I was hoping not to