| 摘要 |
<p>PURPOSE:To form an air duct between a substrate material and an external wall material, to ensure, for example, the air duct making operation of ventilation and connecting to an attic, etc., in a wall part for that purpose and to prevent the air duct from getting moldy in the case condensations occur inside the air duct. CONSTITUTION:A substrate material 2, on which an external wall material of a building can be mounted, is formed in the shape of a flat plate, and a continuous distribution channel 3 having proper width and depth is formed in the mounting surface side of the external wall material on the substrate material except hexagonal projections 4. Waterproof treatment is applied to the surface of the mounting surface side, and a notched surface 7 is formed on the circumferential edge section.</p> |
