DryPly 23/32 Cat Ps1-09 Tongue and Groove Pine Subfloor, Application as 4 x 8Water repellent coating that reduces water absorption by up to 40% during the normal construction cycle compared to uncoated plywood Durable single layer flooring panel for use under hardwood flooring, carpet, pad, and vinyl floor coverings Made from wood sourced through a system that is third party certified to the Sustainable Forestry Initiative (SFI) fiber sourcing standard Suitable for uses not permanently exposed to the weather (Exposure 1 panel)