Accord Ventilation model AMFRBLV210 is a Matte, 2-Inch x 10-Inch -LRB- Duct Opening Measurements -RRB-, Floor Register with a tight-laced Design. To determine the chew out size to order, the size of the passageway opening -LRB- not the hand-me-down vent itself -RRB-. Each Accord Ventilation product is using soprano quality materials that provide strength and durability. Accord Ventilation floor registers, grates, and vents in a variety of designs and sizes. Accord Ventilation products are to enhance any home decor. Our Lifetime circumscribed Warranty every floor register, vent, grate, and grille manufactured by Accord Ventilation.