10"w X 4"h 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent Duct Cover [Outer Dimensions: 11.65"w X 5.65"h]

  • Easy Unrestricted Air Flow For Your HVAC System
  • Multi-Shutter Damper With Handle Operator With Screws Included
  • Damper to Control and Shut Off Airflow To Save Electricty and Money
  • Large Curved Blades Direct The Airlflow at an Angle, but Are Not Directionally Adjustable

Outer Dimensions:  11.75"W x 5.75"H

Click Here For Measuring Instructions

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Why Buy Aluminum Adjustable Curved Blade?

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.  With the Aluminum Adjustable Curved grille, you'll not only have full control of your airflow, you'll additionally add extra measure of quality that's noticed by 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.

Every part is hand inspected for quality before it is packaged, no exceptions. No sharp surface edges. Just run your finger along the edge of the top plate and you’ll find a smooth finished surface.

Don’t worry, you’re covered by our 100% money-back guarantee no questions asked. Click Add to Cart and enjoy a new updated refreshing look to your home.


Inside WidthInside Height
Outside WidthOutside Height


TypeMaterialColor/FinishAirflow StrengthPowder CoatedInstallation LocationReturnable
Supply GrilleSteel
WhiteHighyesSidewall and Ceiling30 Days
TypeMaterialColor/FinishAirflow Strength
Supply GrilleSteel
Powder CoatedInstallation LocationReturnable
yesSidewall and Ceiling
30 Days

How To Measure A 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 grille size represents the width, the second number represents the height.

Outer Dimensions

Front measurements of the vent

Inner Dimensions

Back measurements of the vent or “Nominal Dimensions”

Why HVAC Premium?

HVAC Premium Has Sold Over 5,000,000 Grilles & We Are Proud of Our Many Happy Customers!

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, 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 look no further than HVAC Premium. We have the largest selection of Grilles Registers & Diffusers.

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