Shoemaker 1600 Series 6" x 14" Brown Heavy Duty Return Air Floor Grille #1600-6X14 (Fits a 6" x 14" Hole) This product is designed to fit a 6" x 14" hole. Overall outside dimension is 8-3/8" x 16-3/8". Heavy-duty honeycomb construction; blades run parallel to longest dimension. Paint is a brown, driftwood tan finish. Flush core and frame provides smooth surface; Free area equals more than 75% of nominal size.