The E509 3L is our 190mm width walnut floor board. Our experts use Hard Wax Oil to finish these walnut boards as Hard Wax Oil gives a superior protection against spillages compared to traditional oils. E509 3L is suitable for use in both domestic and commercial environments to help create a subtle warmth in any room. We recommend applying Blanchon Maintenance Oil to your oiled Walnut Floor once it has been fitted to give a beautiful rich, nourished finish. Applying the Maintenance Oil to your floor will also boost the floor's protection against spills and marks.