POST TO PIPE ADAPTER DONUT 2 3/8" X 5" X 5"
The uNi-5™
Say goodbye to flimsy plastic donuts and hello to a smarter, sturdier way to set vinyl posts. The uNi-5™ is built to last, making installs cleaner, faster, and stronger every single time.
What makes the uNi-5™ different:
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Heavy-duty steel construction – won’t crack, split, or buckle under pressure
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One size fits most – designed to work across multiple vinyl post thicknesses
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Find it instantly – includes a magnet tool so you know exactly where it sits inside the post
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Cleaner results – no more drilling extra holes just to hunt for a donut
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Boosts efficiency – simple, repeatable steps crews can rely on
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Locked-in strength – secure posts with ¼” rivets instead of wrestling with long screws
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Twist-proof design – square shape delivers full contact inside the post and prevents movement
The uNi-5™ makes vinyl fence installs stronger, simpler, and stress-free.