Accord Ventilation model ABSWWH41010 is a white, 10-Inch x 10-Inch(Duct Opening Measurements), sidewall/ceiling register with a 4-way design. To determine the correct size to order, measure the size of the duct opening (not the old vent itself). Each Accord Ventilation product is crafted using high quality materials that provide strength and durability. Accord Ventilation produces floor registers, grates, and vents in a variety of designs and sizes. Accord Ventilation products are sure to enhance any home decor. vent, grate, and grille manufactured by Accord Ventilation.