Windows
Blue Drapes, Full Tile
A cloth block with 5 hit points.
Crafting
Craft at Backpack · makes 1
Crafted as 
Curtains and Drapes: pick this one of its variants when you place it.
Cloth Fragment× 5
Iron× 5
Drops when destroyed
- Cloth Fragment× 1-3
Where to find (8 POIs)
Navezgane General Hospital (tier 5), Town Hall (tier 4), Bob's Boars & Carl's Corn (tier 3), R. Thornbury Residence (tier 2), The Huenink Residence (tier 2), The Berry Residence, The Dickens Retreat, Wax Manor.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.