The 90mm x 9mm board is available in 2.4m and 3.6m lengths, and is used for walling and ceiling applications. The 90mm board is available in our Matte range, which beautifully enhances the grain of the timber. As the timber lining board is prefinished, there is no further finishing required after installation! The Matte range is an oil-stained finish that gives a natural look to your project, and can be recoated if required. The Tongue and Groove profile is easy to install, and is lightweight making installation a quick process. The 90mm board has a matching Quad and Coverstrip trim to cover the expansion joint and is a great finishing detail.