LDC BANA has a concealed mounting, which gives your facade or project a smooth look. The tongue and groove allow quick installation. This pattern can be fire-retardant treated with the 100% natural fire-retardant Burnblock® to the desired reaction to fire class. LDCwood® ThermoWood® Ayous is knot-free and is always quarter-sawn, which ensures absolute top quality. LDCwood® ThermoWood® Ayous is available in exceptional dimensions which makes it extremely versatile for different applications and projects. Ayous is harvested from sustainably managed forests and is OLB certified.