May 28, 2019 · Buying Tips. When shopping for 4×4 pressure treated posts, look at the ends. If growth rings start near the center of the post and expand outward, it’s almost certainly made from a peeler re. If the rings are off center, it’s not the log’s center. Our suggestion is to buy 10-ft. posts instead of peeler-core 8-footers and trim them to fit.
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