Red Oak Wood Vent Drop In No Damper 4" x 10" is a quality hi-output drop-in vent.
Overall Size: 5-3/4" x 11-1/8"
• Easy Installation (Drops into exsisting Duct Hole) • Beveled Bi-Directional Louvers • Lifetime Warranty on all 10 Standard Sizes • Beveled Louvers for Premium Fit & Finish • Highest quality registers handmade in USA