LP® TopNotch® 350 Premium OSB Sub-Flooring delivers strength, stiffness and premium moisture resistance at a great price. LP TopNotch 350 creates a strong, smooth surface suitable for
a variety of finished flooring.
Patented self-draining notch system
Self-spacing tongue & groove system
Superior moisture resistance
Fully sanded top-side surface
APA rated OSB flooring
Moisture-Resistant Edge Seal
50 Year transferable limited warranty
100 Day no-sand warranty
4' x 8' x 23/32"
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