Decor and furniture
Sign Decal Corrugated Metal 3x2
It's a sign. You write things on it.
Harvest drops
Iron× 10
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Scrap Metal Pile (60% of the time) where it lands.
Where to find (14 POIs)
Calm Inn (tier 4), Downtown Marketplace (tier 4), Jeffelon Zuckergates Estate (tier 4), Wildfire Camping (tier 3), Palo Verde Brickworks (tier 2), The Animal Hoarder (tier 2), Bobcats Bar (tier 1), Crazy Billy's Used Cars (tier 1), Pass-N-Gas Store #10 (tier 1), The Dead Rooster (tier 1), AG1 Feed, Fats Foods, Westwood Place, Zip Coffee.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.