Doors and hatches
Grey Trailer Door, No Window
Press & hold Activate to lock it or set a combination. Repair with a construction tool using the secondary action.
Harvest drops
Iron× 5-10
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
Drops when destroyed
- Iron× 10
When it collapses
Falling, it leaves 
Scrap Metal Pile (75% of the time) where it lands.
Where to find (3 POIs)
The Wagon Diner (tier 2), Honeysuckle Trailer Park (tier 1), The Hinton Residence (tier 1).
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.