Sign Decal Corrugated Metal 2x1
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 (29 POIs)
7 Days Suites (tier 5), Shamway Factory (tier 5), Fort Choppa (tier 4), Holvez Rent-a-Car (tier 4), Jeffelon Zuckergates Estate (tier 4), ParKing Garage #2 (tier 4), Downtown MeltDowns (tier 3), Pawsnout Factory (tier 3), BONG Auto Parts Manufacturing (tier 2), Downtown Evacuation Point (tier 2), Elite Essentials (tier 2), NEW Mamma Pizza (tier 2), Nick's Motel (tier 2), Pal's Marina (tier 2), Shady Square Shoppe (tier 2), Bobcats Bar (tier 1), Auto Wash, Blue Clover Hotel, Car Impound Lot, Carlos' Travel Center, Cleanico Center, Demolition Site, Four Oaks Apartments, Hellman's Fire Insurance, Karate Kamp, Midway Hospital, Navezgane Bus Terminal, Navezgane Outlets, Ship-n-sip Station.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.