This print was designed to fit a composite deck post that is 110 x 110 mm in dimension. The print may be a little loose to account for some expanding/contraction of composite deck materials. The dimensions on my posts varied slightly.

Prints fine with PLA. I had to print this with full supports in the inset area which extended the print time. Printing up side down and bridging both failed for me, let me know if you find a better solution for faster printing without supports.