6" x 12" (7.5" x 13.75" overall size) oil-rubbed bronze victorian register with damper (hvac vent cover) vent covers unlimited outside dimensions 7-3/8" x 13-3/4" the victorian floor registers and vent covers have a plated finish over a 3mm thick steel core. a durable lacquer coating has been added to the plated registers to help protect the finish. the 6x 12register covers come equipped with knock-out screw holes for sidewall or ceiling installation. screws are included. victorian floor registers and vent covers have an adjustable heavy duty aluminum damper which can be removed if desired. listed sizes are the actual hole size the floor register will be inserted in to. you will love the easy drop-in-style installation.