14" ALUMINUM/WHITE RENOVATOR SERIES DIFFUSER, ALUMINUM FACE, UNIQUE DEFLECTOR APETURES, AIR DISTRIBUTED IN THIN LAYERS ALONG CEILING SURFACE ALLOWING OPTIMUM MIXING OF CONDITIONED AIR, FORMED GALVANIZED STEEL BACK PANEL, FRAME INCLUDES 4 SEISMIC SAFETY CONNECTIONS, 444-14" COLLAR IS FACTORY INSTALLED, UTILIZES BUTTERFLY DAMPER (3800 SERIES) INSERTED IN COLLAR, COLLAR SIZE:14", DIMS:4 3/16" X 23 5/8"W X 23 5/8"L, WEIGHT:4 LBS 10 OZ, BULK, MADE IN USA.