Hart & Cooley® Baseboard Return Grille, 1-Piece, Series: 657, 20 x 6 in, 19-1/2 in Duct Width, 5-29/32 in Duct Height, 21-3/4 in Overall Width, 7/8 in Overall Depth, 225 to 525 cfm, 0.75 sq-ft, 20 deg Deflection, 1/3 in Blade Spacing, Steel, Bright White Enamel, Domestic