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Click On The "X" To View All Products In
Those Specific Dimensions

Available Sizes (in.)

Height Width
6 8 10 12 14 16 18 20 22 24 25 30 36
4 X X X X X X - X X X X X X
6 X X X X X X X X X X X X X
8 X X X X X X X X X X X X X
10 X X X X X X X X X X X X X
12 X X X X X X X X X X X X X
14 X X X X X X X X X X X X X
16 X X X X X X X X X X X X X
18 X X X X X X X X X X X X X
20 X X X X X X X X X X X X X
24 X X X X X X X X X X X X X
25 - - - - X X X X X - X X -
36 X X X X X X X X X X X X X

The Full Box Of Sizes
On The Following Products...

Click below to view all sizes in each category, or click on the spreadsheet to view all products within your size requirement.

30
30
30
30
30
30
30
30
30

30"w X 10"h Steel Return Air Grilles - Sidewall and ceiling - HVAC DUCT COVER - White [Outer Dimensions: 31.75"w X 11.75"h]

$20.95
30
30
30
30
30
30
30
30
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30"w X 10"h Steel Return Air Grilles - Sidewall and ceiling - HVAC DUCT COVER - White [Outer Dimensions: 31.75"w X 11.75"h]

$20.95
30
30
30
30
30
30
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30
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30"w X 8"h Steel Return Air Grilles - Sidewall and ceiling - HVAC DUCT COVER - White [Outer Dimensions: 31.75"w X 9.75"h]

$20.95

Get A FREE
Magnetic Wristband!

Add this product to your cart, spend a minimum of $50 on other products, and your wristband is FREE!

Limited inventory. While supplies last. 

Decorative Line Set Covers
For Ductless Mini Split ACs

Protect your exposed line sets with our high quality UV and Fire Resistant ABS Plastic line set covers that also protect against all weather conditions and animal intrusion.

Shop Line Set Covers

Our Filters Are 25% 
Thicker Than All Other Brands

MERV 8 is the most recommended level of filtration by industry professionals. Our MERV 8 pleated filters are 30 times more efficient at capturing micro particles than ordinary fiberglass filters. A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance.

Shop Filters

Flat Stamped Steel
Return Vents

Return vents are connected to your return ducts, which pull air out of your indoor spaces to deliver to your heating and cooling system.

Shop Return Vents

Get A FREE Magnetic Wristband!

Add this product to your cart, spend a minimum of $50 on other products, and your wristband is FREE.

Limited inventory. While supplies last. 

Decorative Line Set Covers
For Ductless Mini Split ACs

Customizable To Fit Your HVAC System

Protect your exposed line sets with our high quality UV and Fire
Resistant ABS Plastic line set covers that also protect against
all weather conditions and animal intrusion.

Shop Line Set Covers

Our Filters Are 25% Thicker
Than All Other Brands

MERV-8

Return vents are connected to your return ducts,
which pull air out of your indoor spaces to deliver
to your heating and cooling system.

Shop Filters

Flat Stamped Steel
Return Vents

Return vents are connected to your return ducts,
which pull air out of your indoor spaces to deliver
to your heating and cooling system.

Shop Return Vents

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30 Day Money Back Guarantee

If you are, for any reason, not 100% satisfied with your purchase, you don’t have to worry, You’re covered by our 100% money back guarantee - no questions asked.

30 Day Money Back Guarantee

If you are, for any reason, not 100% satisfied with your purchase, you don’t have to worry, You’re covered by our 100% money back guarantee - no questions asked.

Hear From Our
Over 5 Million Customers Served!

“Absolutely Perfect”

“Absolutely perfect for my needs to cover the area in the garage where the hot water heater is and make sure sufficient ventilation getting to the hot water heater.”

Mabuhay Enterprises

“Hard to find at stores”

“My vent opening wasn't exactly the measurements of the vents you offer. I decided a vent half an inch taller would work, and it did. It came quickly, and I liked the way it was wrapped with the screws included. The white grill nicely covered up that scary duct opening!”

Poppy HG.

“It fit, installed easily and looks good”

“I have a ceiling mount intake, it is just outside the bathroom in a dressing area. After 30 years it got rusty. The price was excellent. Another chore checked off my list.”

Life Is Good

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?

We are a trusted HVAC brand with over 10 years of experience and over 5,000,000 happy customers. Servicing every customer from contractors, to home remodeling specialists, to Do It Yourselfers, our inventory selection is the largest of HVAC supplies sizes in the USA.

HVAC PREMIUM BLOG

The Best Materials For Return Air Filter Grilles & Diffusers

Nobody ever said installing an HVAC system was simple! On top of energy concerns and getting the best bang for your buck, you also need to make sure the materials you choose are suitable for your interior and exterior circumstances. Whether steel, plastic, wood, or aluminum, each material has specific advantages and disadvantages. Let’s explore them...

Read More...

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