JR Products Polar White 9-7/8"W x 2-1/4"H Floor Heating/ Cooling Register w/o Damper 288-86-A-PW-A 08-0204

Rectangular register overall size is 11-7/8 inch width x 4-1/4 inch height. Molded thermoplastic construction won't rust or fade and has solid color throughout so it will not peel or flake.