16" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover [Outer Dimensions: 18"]

  • Commercial Grade Aluminum That Will Never Rust
  • Incorporated with Integral Butterfly Damper for Full Airflow Control
  • Decorative
  • Hidden Screw Installation
  • Damper to Adjust and Shut Off Airflow
  • Center Core is Removable for Easy Access and Maintenance

Outer Diameter:  16"

Click Here For Measuring Instructions

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In-Stock & Ready To Ship

Why Buy A Round Aluminum
Grille With A Damper?

This round aluminum grille is incorporated with the integral butterfly damper for full air flow control. Assembled before powder coat painting to ensure perfect smooth finish. Made with commercial grade aluminum, this vent cover will never rust, and was designed for Warehouses, Factories, Workshops, Gymnasiums & Restaurants. The center core is removable for easy access and maintenance.

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 Diameter
Outside Diameter


TypeMaterialColor/FinishAirflow StrengthPowder CoatedInstallation LocationReturnable
Supply GrilleSteel
BeigeHighYesCeiling30 Days
TypeMaterialColor/FinishAirflow Strength
Supply GrilleSteel
Powder CoatedInstallation LocationReturnable
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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