High Quality Aluminum Registers and Grilles. Choose from Supply Air Grilles, Return Air Grilles, Cube Core Grilles, Filter Grilles, Curved Blade Registers, Bar Linear Registers, Industrial Registers and Loouvered Registers. Three guaranteed production times available: 3 days, 1-week, 2-3 weeks. Powder coated superior painted finishes: White, Silver, Bronze, or Mill.