The foam would eventually weaken but would be better than the factory,s solution- nothing. I used it beneath fiberglass swimming pool steps that were weak and it worked for a while then began to sag. Something solid like wood or PVC would not weaken. The PVC pipes were simple to install because they are easy to push to the rear of the shower. After putting them in I folded some cardboard and placed it along the edge to prevent them from sliding out.
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2019Whitehawk 23MRB
2018 GMC Sierra 1500
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