10 x 10-inch White Aluminum square ceiling diffuser, front view
10 x 10-inch White Aluminum square ceiling diffuser, rear view
10 x 10-inch White Aluminum square ceiling diffuser, front view 2
10 x 10-inch White Aluminum square ceiling diffuser, angled view
10 x 10-inch White Aluminum square ceiling diffuser, rear view 2
10 x 10-inch White Aluminum square ceiling diffuser, damper lever detail
10 x 10-inch White Aluminum square ceiling diffuser, damper mechanism detail
10 x 10-inch White Aluminum square ceiling diffuser, frame corner detail
10 x 10-inch White Aluminum square ceiling diffuser, mounting screw detail
10 x 10-inch White Aluminum square ceiling diffuser, front view
10 x 10-inch White Aluminum square ceiling diffuser, rear view
10 x 10-inch White Aluminum square ceiling diffuser, front view 2
10 x 10-inch White Aluminum square ceiling diffuser, angled view
10 x 10-inch White Aluminum square ceiling diffuser, rear view 2
10 x 10-inch White Aluminum square ceiling diffuser, damper lever detail
10 x 10-inch White Aluminum square ceiling diffuser, damper mechanism detail
10 x 10-inch White Aluminum square ceiling diffuser, frame corner detail
10 x 10-inch White Aluminum square ceiling diffuser, mounting screw detail

Item # 420104-1

10"x10" 4-Way White Aluminum Square Ceiling Diffuser, Rust-Proof Ceiling Supply Grille

$59.59
$0.00
$59.59
Order By Duct Opening Measurements10"W x 10"H
Outer Dimensions 11-3/4"W X 11-3/4"H overall faceplate size
Bulk Pricing
2-1011-2021-4950+100+
$50.66$47.68$44.70$41.72
Subtotal:

Available Sizes & Options

See all Square Ceiling Diffusers →
10 x 10-inch White Aluminum square ceiling diffuser, front view

10"x10" 4-Way White Aluminum Square Ceiling Diffuser, Rust-Proof Ceiling Supply Grille

$59.59
10 x 10-inch White Aluminum square ceiling diffuser, front view
10 x 10-inch White Aluminum square ceiling diffuser, rear view
10 x 10-inch White Aluminum square ceiling diffuser, front view 2
10 x 10-inch White Aluminum square ceiling diffuser, angled view
10 x 10-inch White Aluminum square ceiling diffuser, rear view 2
10 x 10-inch White Aluminum square ceiling diffuser, damper lever detail
10 x 10-inch White Aluminum square ceiling diffuser, damper mechanism detail
10 x 10-inch White Aluminum square ceiling diffuser, frame corner detail
10 x 10-inch White Aluminum square ceiling diffuser, mounting screw detail

10"x10" 4-Way White Aluminum Square Ceiling Diffuser, Rust-Proof Ceiling Supply Grille

$59.59
Description
Description
x

Product Overview

The 10"W x 10"H white aluminum square ceiling diffuser carries supply air into the room through a ceiling opening. Extruded aluminum resists rust in humid rooms, a stronger choice than lightweight plastic covers. The 4-way blade pattern directs air across the room. Select this square ceiling diffuser by its duct opening size, not the overall face size, so it seats correctly on the first fit.

Key Features

  • Aluminum construction: Aluminum keeps the square ceiling diffuser rigid during installation and resists warping over time.
  • White finish: The white finish coordinates with common flooring, trim, and hardware.
  • 4-Way air pattern: The 4-way throw sends conditioned air where the space needs it.
  • Right-fit sizing: Ordered by duct opening size, this square ceiling diffuser matches standard duct dimensions and cuts wrong-size returns.

Dimensions and Specifications

Product type Square Ceiling Diffuser
Airflow function Supply air
Nominal opening 10"W x 10"H
Overall face dimensions 11-3/4"W X 11-3/4"H
Material Aluminum
Finish White
Mounting location Ceiling
Airflow pattern 4-Way
Airflow control Fixed
Order by Duct Opening
Pack quantity 1
MPN 420104-1
Brand AirGrilles.com

Is This the Right Vent for Your Opening?

Choose this square ceiling diffuser if you need a supply-air vent for a ceiling opening. This square ceiling diffuser carries supply air and mounts on ceiling surfaces. It is not designed for floor installation or foot traffic, exterior or outdoor use, dryer exhaust venting or use as a filter-holding return grille. Confirm the airflow function against your HVAC layout before ordering. It suits office and commercial ceilings as well as residential rooms.

How to Measure for This Vent

Remove the existing vent and measure the width and height of the duct opening, not the outer face of the old cover. Match those two numbers to the nominal size above. The overall face measures 11-3/4"W X 11-3/4"H.

Installation

Position the square ceiling diffuser over the duct opening with the louvers facing the room. Confirm the frame sits flush against the ceiling surface before marking the screw points. Secure it with the included screws without overtightening, since excess force can distort the frame.

What's Included

  • 1 x square ceiling diffuser
  • Mounting screws

Ductwork, wall anchors, and installation tools are not included.

Care and Maintenance

Clean the square ceiling diffuser with a soft, damp cloth and mild soap. Avoid abrasive chemicals that can damage the white finish. Dry the surface to keep moisture off the metal.

Compare Similar Options

Use this comparison to confirm the square ceiling diffuser matches your opening and airflow need.

Option Best for Material Installation
This square ceiling diffuser Directional ceiling or wall supply Aluminum Ceiling or wall
Linear slot diffuser Modern slim supply lines Aluminum Wall, ceiling or floor
Sidewall supply register Wall supply openings Steel Wall

Frequently Asked Questions

What does the listed size refer to?

The listed 10"W x 10"H is the duct opening size the vent fits, not the outer face. The overall face measures 11-3/4"W X 11-3/4"H.

Is this a supply register or a return grille?

This is a supply-air square ceiling diffuser. It moves conditioned air into the room.

Is the airflow adjustable?

No. This model has a fixed face without a damper.

Can this be installed on the floor?

No. This model is not rated for foot traffic and should be used on wall or ceiling openings.

Are mounting screws included?

Yes. Mounting screws ship with every unit.

Shipping & Return
Shipping & Return
x

Shipping

  • Free shipping over $250 (contiguous US). Otherwise calculated at checkout.
  • Order by 11:00 AM ET on a business day and it ships the same day — otherwise the next business day.
  • Delivery in about 4–5 days after dispatch (FedEx / UPS), with tracking emailed when your order ships.
  • US only. We cannot ship to P.O. boxes or APO/FPO addresses.

Returns

  • 30-day returns. Item must be unused and in its original packaging; opened packages incur a 20% restocking fee.
  • Start a return from your account or at help@airgrilles.com (authorization required). We email a prepaid return label and deduct return shipping from your refund (free if the return is our error); refunds are issued within 5 business days of approval.
  • Damaged, defective, wrong, or lost item? Tell us within 7 days with photos and your order number.

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