1-1/8" x 1-1/8" Square Baluster (8900) Moulding is a substantial, straight-profile railing component designed to bring strength and clean architectural lines to interior stair systems. With its larger square dimensions, this baluster creates a bold, balanced appearance that pairs well with solid handrails and newel posts in both traditional and contemporary homes. The 8900 profile offers consistent sizing for uniform spacing and dependable structural support in residential balustrade applications. Whether you're building a new staircase or upgrading an existing rail system, this square baluster delivers durability, clean lines, and professional results.