24"w x 12"h steel return air grilles - sidewall and ceiling - hvac duct cover - white [outer dimensions: 25.75"w x 13.75"h] hvac premium <b>hvac premium has been providing superior in quality service for many many years. our products are second to none, and we've helped numerous contractors, <br> diy projects, and home improvement remodeling specialists complete their masterpiece. if you are looking for a top of the line unit to enhance your project <br>look no further than hvac premium. we have the largest selection of grilles registers and diffusers.<br /> <br /> hvac premium has sold over 5,000,000 grilles - we are proud of our many happy customers!</b> <b>8"w x 24"h is the size for the duct opening measurement only, actual front end outer dimensions are 9.75" width x "w x 25.75" height - see below in description how to measure a grille</b><br> <br> <br> 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 you air system.<br> these grilles and registers give you an extra measure of quality that are visible to your family members and house guests.<br> this grille has a high standard of design, production and finish on all products.<br> <b>how to measure a grille</b><br> <b>overall size: </b><b>measure</b> the size of the <b>duct opening</b>. do not measure the old vent cover. if your duct opening is 14" wide by 20" tall, order a 14x20.<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 <br> 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>