8"w x 4"h adjustable air supply diffuser - hvac vent cover sidewall or ceiling - grille register - high airflow - white [outer dimensions: 9.75"w x 5.75"h] metal-fab/air-craft 8"w x 4"h adjustable air supply diffuser - hvac vent cover sidewall or ceiling - grille register - high airflow - black [outer dimensions: 9.75"w x 5.75"h]<br><br>8"w x 4"h is the size for the duct opening measurement only actual front end frame outer dimensions are 9.75"w x 5.75"h - see below in description how to measure a grille<br><br></b><br><br><br>you may think of grilles and registers as a generic component of the ventilation system in your house.<br> but they are also the most visible representation of you air system.<br> these grilles and registers give you an extra measure of quality that you can point out to your family members and house guests.<br> some of our best features aren’t readily apparent, but you’ll appreciate the benefits over a long period of time.<br> this grille has a high standard of design, production and finish on all products.<br><br><br> <b>every part is hand inspected for quality before it is packaged, no exceptions.</b><br> quality packaging - carefully shrink wrapped with cardboard backing to prevent damage in shipment<br> easy unrestricted air flow.<br><br><br> <b>how to measure a grille</b><br> <b>overall size:</b><br> 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 wall joint.<br> total outer size of this grille is; listed size +1.875"" at the width, and + 2"" at the height.<br><br> <b>width vs height</b><br> 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. <br><br><b>100% satisfaction guaranteed</b><p>don’t worry, you’re covered by our 100% moneyback guarantee no questions asked. <b>click add to cart now!</b> and enjoy a new updated refreshing look to your home.</p>