User Summary: The Citadel / Grand Citadel Double Thick Wall pack is part of the Castle Builder System. It is made of "Dwarvenite" and includes some metal and magnetized parts. This item was initially available as an add-on to a pledge level during the Castle Builder System Kickstarter. This pack was specifically designed as an add-on to the Citadel / Grand Citadel. The item comes in both painted and unpainted versions. CBS parts are from the City Builder System series. The Citadel / Grand Citadel Double Thick Wall pack comes with these 49 pieces: (26) Cube Spacer (5) Wall Platform (2) Long Wall Platform (4) Inside Corner Post (4) 4x4 Roof Platform (2) 2x2 Flagstone Floor (2) 2x2 Flagstone Floor w Sm Trapdoor (2) Small Lattice Trapdoor (2) CBS - Ladder