WP-Grand Plank. 3 Layer Plank Product. Available in two exclusive formats that demonstrate the true dimensions of this product. The Grand Plank appearance is emphasized due to a bevel on the longitudinal and header joints. Tongue and groove joints on four sides. Can be completely adhered to the subfloor, or installed floating in optimal room climates. Tailor made dimensionally stable header joint by utilizing top-quality plywood. Spruce supporting material with vertically arranged growth rings. Suitable for installation over underfloor heating
