Shoemaker 1600-8X30 8"x30" Floor Grille - Brown This product is designed to fit a 8" x 30" hole. Overall outside dimension is 10-3/8" x 32-3/8". 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.