Hart & Cooley 661 Series 12" x 6" White Ceiling or Sidewall Register (Fits a 12"W x 6"H Hole) Fits a 12"W x 6"H hole; actual overall size is 13-1/4"W x 7-1/4"H All-steel construction; Used for ceiling or sidewall installations For heating or cooling; Ideal for shallow duct installations Two-way deflection; 1/3" spaced fins set at 20 degrees Multi-shutter valve; Bright white finish