Horizontal railing systems feature elements that run parallel to the top and bottom rails, giving them a modern look. Instead of vertical bars, they use horizontal bars, cables, or panels. The main components include the top and bottom rails, which are usually made from materials like aluminum, stainless steel, wood, or vinyl. The infill can include horizontal bars, simple cables for a clean appearance, or sometimes solid panels. Vertical support posts hold everything in place and typically match the material of the rails, while various fasteners secure the infill to the rails.