Linear Bar Grille Diffuser Linear bar grille diffuserrs are designed for air supply and return air distribution. These barline grilles are high quality one-way floor registers with extruded aluminum construction. These linear floor grilles look great in any modern decor and are suitable for residential or light commercial applications. If your project requires custom linear bar grille diffuser, our team of craftsmen can create unlimited designs, styles, shapes, access points, special flange sizes, finishes and installation options while meeting all HVAC and building standards. Your linear bar grille diffuser will be manufactured quickly and within budget to meet your exact requirements. We can transform a plain grille into an attractive, decorative HVAC grille. Place floor grilles into custom bronze registers to accentuate your room and decor. We specialize in creating linear strip grilles with custom and period finishes for any restoration, new construction or application, including floor grilles, wall grilles, perimeter radiant grilles, ceiling grilles, bay window grilles, registers, supply grilles, return grilles and wall cladding and decorative screens. Whether your project requires curved linear grilles, inside corners, outside corners, beveled corners, custom strip spacing, wall cladding, column wraps or rounded corner linear grilles, our architectural linear grille professionals can assist you.