We have REAL plastic lumber. Not composite 50% sawdust like trex. Our lumber is 100% recycled #2 HDPE milk jugs. Only going to last 400 years. We have 1 x 6, 2 x 6, 2 x 4 x 12' and 4 x 4 x 8'. Lite gray or cedar color. Priced about the same as trex.
We also have some left over plastic lumber from a big project we did in New Jersey. Consisting of the salvaged remains of a 1000 ft. fixed and floating boardwalk we built. 2 x 8, 2 x 10. 4 x 6, 2 x 2. Decks and railings. All assembled. You come and take it apart. All stainless screws. Priced half the cost of wood lumber. I put 2 x 10 lumber on my flat bed construction trailer 20 years ago, still looks new.