Registers and Vents 4" Flat Vent with Damper Finish: Bronze Patina, Size: 5.5" H x 11.5" W x 2 D HVF-410-BP Finish: Bronze Patina, Size: 5.5" H x 11.5" W x 2 D Features: -Vent.-Projection: 2". Dimensions: -Overall dimensions: 5.5" H x 11.5" W x 2" D. Collection: -Registers and Vents collection.