3D letter sign boards (channel letters) are illuminated or non-illuminated signage solutions that give a premium look to storefronts or business premises. These signs feature three-dimensional letters crafted from materials like acrylic or metal for a sleek appearance. Key benefits include high visibility due to their dimensional design, options for LED backlighting or front lighting, customization in fonts and colors to match branding, weather resistance for outdoor use, and a professional aesthetic that enhances brand perception.