These boards are from seasoned European timber that provides a warm golden colour, rather than the more greyish tones often found in American, Russian and Asian grown timbers. Prime Grade Oak Flooring will provide a touch of sophistication and elegance to your floor with clean grain and more uniform in colour. Prime grade floors are well suited to more formal rooms such as entrance halls, dining rooms and salons to provide a clean bright refreshing alternative. Prime grade provides a clean board with less variation in colour and minimal knots (small pin knots allowed). Tounge and Grove Ends Matched available in Square Shoulder. These oak floors come in long lengths boards with majority over 2m and many as long as 3m. Suitable as structural floor.