2026 Pool & Spa Show

Doug Schaefer
Owner
Trigonon


Doug Schaefer is the owner and inventor of Trigonon. He spent over a decade in pool management, personally measuring countless liners & covers. Frustrated by the inaccuracies and labor-intensive methods, he developed a patented device & proprietary software to streamline the process. His solution enhances precision, reduces labor & offers a cost-effective alternative to existing industry tools..

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