Species this red balau comes with side grooves so you can fit it with hidden decking fasteners red balau dark red in color is a very popular choice for his natural beauty and proven performance under extreme conditions is extremely durable and very resistant to decay insects and fungal attack even in tropical environments resistant to abrasion wear and dents red balau is used for boardwalks bridges wharves and decking and is easy to maintain you can choose an oil finish to maintain a