Doors and hatches
Blue Closet Door
Press & hold Activate to lock it or set a combination. Upgrade & repair with a construction tool using the secondary action.
Harvest drops
Wood× 2
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Wood Debris (Terrain) (75% of the time) where it lands.
Where to find (5 POIs)
Law & Order Square (tier 3), Midway Clinic (tier 3), Poopy Pants City Daycare (tier 3), The Bennett Residence (tier 2), The Wade Residence (tier 1).
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.