Decorative Grille, Vent Cover, or Return Register. Made of Urethane Resin to fit over a 14"x14" duct or opening. Total size of vent is 16&rdquo;x16"x3/8", for wall and ceiling grilles (not for floor use). Decorative Grille, historic reproduction of possibly the best grille ever made in USA, Circa 1870's Use to replace old louvered grilles with decorative supply or return grill, for wall & ceiling Incredible three dimensional detail on front surface of grille, not just hole punched sheet metal Hand Rubbed Rubbed Bronze Finish, also available in Antique Brass Finish or Pewter Finishes Made from a high quality urethane resin, dimensionaly stable, won't rot, rust, corrode or grow mold