Imperial Design Vent Covers - Made to Order Collection A classic clover leaf pattern to complement traditional and contemporary spaces. With our laser-cut capability, we can offer you options tailored to your project: 30+ sizes, 2 materials, 3 thicknesses, 6 colors, and optional mounting holes and underside lip. The steel or aluminum Imperial grille is available in 6 colors: Oil-Rubbed Bronze, Black, Sun Gold, White, Silver and Gray. Laser Cut Aluminum & Steel Details: Available in 1/8" and 3/16" thicknesses. 1/4" thickness is available by special order. Aluminum 1/8” is not recommended for floor installation. Well suited for both modern and traditional spaces. Available with optional mounting holes and underside lip. Well suited for both modern and traditional spaces. Available in 30+ sizes, 2 materials, 3 thicknesses, 6 colors, and optional mounting holes and underside lip. Available Materials Aluminum Steel Crafted from premium quality aluminum Crafted from premium quality steel Lig