Windows
Grey Dirty Drapes, Right Half Bottom
A cloth block with 5 hit points.
Drops when destroyed
Cloth Fragment× 1-3
Where to find (3 POIs)
Glove Affair Boxing Gym (tier 2), Cobweb Cottage (tier 1), Silent Shack.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.