Upgrade path

Trap Window Store Three Sided Full→ 4× Wood →Plain Wood Window Plug→ 4× Wood →Window Plug 03→ 10× Cobblestone Rocks →Cobblestone Block→ 10× Concrete Mix →Concrete Block→ 10× Forged Steel →Steel Block

Hit a placed block with a stone axe, claw hammer or nail gun while carrying the material of the next step: 4 hits per upgrade.

Drops when destroyed

Where to find (33 POIs)

Crack-a-Book HQ (tier 5), Dishong Tower (tier 5), Higashi Pharmaceutical (tier 5), Navezgane County Jail (tier 5), Navezgane General Hospital (tier 5), Ostrich Hotel (tier 5), Pop-N-Pills Factory (tier 5), Shamway Factory (tier 5), Shotgun Messiah Factory (tier 5), Two Bit Tower (tier 5), Vanity Tower (tier 5), Downtown Marketplace (tier 4), Hybrid Energy (tier 4), Olgiddy & Brother Advertising (tier 4), Pineballs Bowling (tier 4), Richard Munchz Plaza (tier 4), Stand Tower (tier 4), Water Treatment Plant (tier 4), Carl's Cars (tier 3), KZL Radio Station (tier 3), Savage Country (tier 3), The Bend Apartments (tier 3), Triad Medical (tier 3), Weston Weigh Station (tier 3), Joey's Carlot (tier 2), Maggie's Corner Cafe (tier 2), Marvin's Restaurant (tier 1), Bean Counter Court, Circuit Splits Station, Friendszone Sports Center, Navezgane Public Library, Rogue Nerds Refuge, Stock Shark Offices.

Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.