Rocky Mountain Goods 4" x 10" Floor Vents 2 Pack is a heavy duty pack of two brown floor registers 4 x 10. This quality is manifest in the high grade metal used which allows for walking on this floor register. The premium matte white finish is double coated to ensure the color for its lifetime of use. The easy adjust levels allows quick change of flow rate and can even been done with your foot. This floor resister is made to fit a 10 Inch by 4 Inch HVAC hole. The actual floor register outer dimensions are 5.5” by 11.5”. Like all Rocky Mountain Goods products this floor vent comes with a lifetime warranty.