12"w X 4"h Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall or Ceiling - Grille Register - High Airflow - Black [Outer Dimensions: 13.75"w X 5.75"h]

12"w x 4"h adjustable air supply diffuser - HVAC vent cover sidewall or ceiling - grille register - high airflow - black [outer dimensions: 13.75"w x 5.75"h] 12"w x 4"h is the size for the duct opening measurement only. The actual front end frame outer dimensions are 13.75"w x 5.75"h. See below in description how to measure a grille. You may think of grilles and registers as a generic component of the ventilation system in your house. But they are also the most visible representation of your air system. These grilles and registers give you an extra measure of quality that you can point out to your family members and house guests. Some of our best features aren’t readily apparent, but you’ll appreciate the benefits over a long period of time. This grille has a high standard of design, production, and finish on all products. Every part is hand inspected for quality before it is packaged, no exceptions. Quality packaging - carefully shrink wrapped with cardboard backing to prevent damage in shipment. Easy unrestricted airflow. How to measure a grille: Overall Size: Measure the size of the air duct/drywall opening. Do not measure the overall size of the register itself, only measure the "hole" in the wall/duct. Every grille has a front end frame that will overlap at the wall joint. Total outer size of this grille is; listed size +1.875" at the width and +2" at the height. Width vs Height: The first number in a grille size represents the width, the second number represents the height. Example: If your hole is 20" wide by 14" tall, order a 20x14. If your hole is 14" wide by 20" tall, order a 14x20.

• 12"w X 4"h Is The Size For The Duct Opening Measurement Only Actual Front End Frame Outer Dimensions Are 13.75"w X 5.75"h - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE
• High Quality Steel Construction, No Scuff Powder Coat Durable Finish, Smooth, Shiny, Scratch-Resistant, No Sharp Edges, 2 Recessed Screw Holes On Each Side with Screws Included, Screws Same Color As Vent Cover, EASY INSTALLATION
• LOUVERED Adjustable Register Grille for Sidewall or Ceiling Application, Easy Opening and Closing Back Dampers For Better Airflow Control, Quiet and Smooth Control Lever, Noise Free Components
• QUALITY PACKAGING - Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment - Hand Inspected for Quality
• EACH INDIVIDUAL FIN IS ADJUSTABLE FOR MAX AIRFLOW CONTROL – Adjust The Fins To Open or Close From the Front - Easy Unrestricted Air Flow Deflection For Your HVAC System