Premium black powder-coated aluminum fence post channel extrusion for superior durability and weather resistance. Adjustable design fits both 3x3 and 4x4 outdoor WPC composite panels with precise engineering. Heavy-duty construction resists corrosion, fading, and extreme temperatures for long-lasting performance. Sleek modern profile enhances any residential or commercial fencing project. Ideal for decks, terraces, pool areas, and garden boundaries with seamless integration. High-grade aluminum alloy ensures lightweight strength and effortless installation. Precision-milled channels provide perfect alignment for flawless panel mounting. Matte black finish maintains appearance while hiding minor scratches and wear.