Windows
Grey Dirty Drapes, Left Half Tile
A cloth block with 5 hit points.
Drops when destroyed
Cloth Fragment× 1-3
Where to find (3 POIs)
Blue Birdie (tier 1), Cobweb Cottage (tier 1), Prepper's Den.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.