Specification: width 1.22m, length max.: 4m thickness: 6cm The straw board can be widely used in constructions e.g. heat preservation materials, internal walls. It was first introduced by the British in 1940's and was imported to china in early 1980's. And it was considered as a wall to replace the clay bricks, but it failed because the cost of the straw board is much higher than the clays bricks and also because straw board had some technical problems in waterproof. Nowadays, human are more concerning to the environmental protection or globe warming things, e.g., Chinese government plan to forbid using the clay bricks. In addition, the self-adhesive membranes have solved the problems in waterproofing. So the straw board became live again.We have been using this product for more than 15 years. we believed that the straw board is a very environmental and good for recycling in a long view, and people should not doubt for it life time, it will have long lift time than wooden products as long as it is in well waterproof. And the straw board is very easy to apply, much easier than the concrete wall.To conclude, we will strongly recommend using our straw board.