12"w X 12"h 4-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - Black [Outer Dimensions: 13.75"w X 13.75"h]

12"w X 12"h Is The Size For The Duct Opening Measurement Only Actual Front End Frame Outer Dimensions Are 13.75"w X 13.75"h - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE How To Measure A Register Grille: Overall Size: MEASURE the size of the DUCT OPENING. Do not measure the old vent cover. If your duct opening is 14" wide by 20" tall, order a 14x20. Height vs Width The first number in a register grille size represents the width, the second number represents the height. Example: If your duct opening is 14" wide by 20" tall, order a 14x20. This solid stamped steel register vent grille will provide your home with ideal and quiet, rattle free airflow and ventilation for your air-conditioning and heating system as well as smooth opening and closing back dampers. The back dampers are adjusted by the lever at the front of the register so that you can easily control the air flow of your HVAC system. You can install this register supply grille on the ceiling or on the sidewall. The installation is simple, just screw the grille on to your wall with the screws that are included and that’s it!