Hart & Cooley® Baseboard Return Grille, 1-Piece, Series: 657, 16 x 8 in, 15-1/2 in Duct Width, 7-29/32 in Duct Height, 17-3/4 in Overall Width, 7/8 in Overall Depth, 250 to 580 cfm, 0.83 sq-ft, 20 deg Deflection, 1/3 in Blade Spacing, Steel, Bright White Enamel, Domestic