GOLDENPOLEY 42in x 84in Sliding Barn Door with 7 FT Barn Door Hardware Kit, DIY Unfinished K-Frame-Installation Required-Includes Barn Door Slabs,Wood, Barn Door Hardware, Handle, and Floor Guides

Barn Door: Natural wood slabs, harmless and pretty looking, easy installation, after checking the slabs you can install them piece by piece as in the Sixth picture, the package included the needed screws and wood plugs.
Door Dimension: Width:42″, Height:84″, Thickness:1 3/8″,Solid core thick:1/2″.
Regarding the painting: These doors are made of unprocessed natural wood, so it has wood growth lines and some nodes with different densities. These densities affect the absorption of paint. The higher the density, the slower the absorption. For some nodes with high-density or high grease, the paint can’t even absorb. If you mind any unabsorbed parts of the paint, please cover it with thick paint. And before painting, the surface of the door should be polished with sandpaper.