Pine siding. Beware of termites.
The item id for Siding Pine in unturned is 1074. You can use this ID with the commands below to spawn the item, give it to a player or buy it on a modded economy server.
Useable: Barricade
Build: Freeform
Size_X: 1
Size_Y: 1
Size_Z: 0.35
Health: 125
Range: 8
Radius: 0.125
Offset: 0.375
Explosion: 29
Blueprints: 1
Blueprint_0_Type: Barricade
Blueprint_0_Supplies: 1
Blueprint_0_Supply_0_ID: 63
Blueprint_0_Supply_0_Amount: 2
Blueprint_0_Build: 27
PlacementAudioClip: Sounds/WoodenPlacement.mp3
Has_Clip_Prefab: false