Get a deal on the 20" x 10" Double Deflection Adjustable Steel Blade Grille, Front Blades Parallel to Long Dimension in soft white (Shoemaker 933-20X10) while it's still in stock online at PlumbersStock. The 933 series offers a double deflection surface mount grille with adjustable steel blades that provide 4-way airflow. The front blades run parallel to the longest dimension. The nylon bushings reduce noise from metal rattling. Countersunk mounting holes provide a flush appearance. There is no opposed blade damper, and if you want one, check out the 933-O series. Shoemaker stands by its products with their focus on design, innovation, and functionality.