OO Gauge 1:76 -. - Modular Brick Walls with Pillars & Gates -. Ideal for creating realistic boundaries, enclosures, and structural features in dioramas and model railway layouts. The modular wall system comprises interchangeable straight and curved sections in various lengths, designed to connect via separate pillars with multiple connection types—straight, right-angled, T-junction, or end points—with blanking pieces to close unused connections and allow integration of gates, enabling layouts from simple runs to fully enclosed structures.