24 x 24-inch White Steel T-bar cone diffuser, front view
24 x 24-inch White Steel T-bar cone diffuser, front view 2
24 x 24-inch White Steel T-bar cone diffuser, rear view
24 x 24-inch White Steel T-bar cone diffuser, damper mechanism detail
24 x 24-inch White Steel T-bar cone diffuser, mounting clip detail
24 x 24-inch White Steel T-bar cone diffuser, damper lever detail
24 x 24-inch White Steel T-bar cone diffuser, damper mechanism detail 2
24 x 24-inch White Steel T-bar cone diffuser, mounting tab detail
24 x 24-inch White Steel T-bar cone diffuser, front view
24 x 24-inch White Steel T-bar cone diffuser, front view 2
24 x 24-inch White Steel T-bar cone diffuser, rear view
24 x 24-inch White Steel T-bar cone diffuser, damper mechanism detail
24 x 24-inch White Steel T-bar cone diffuser, mounting clip detail
24 x 24-inch White Steel T-bar cone diffuser, damper lever detail
24 x 24-inch White Steel T-bar cone diffuser, damper mechanism detail 2
24 x 24-inch White Steel T-bar cone diffuser, mounting tab detail

Item # 910103-8

Fits 24"x24" White Steel T-Bar Drop Ceiling Diffuser, 2x2 Lay-In 3-Cone, 12" Round Neck

$59.99
$0.00
$59.99
Order By Neck Size12" Neck
Outer Dimensions 23-3/4"W x 23-3/4"H overall faceplate size
Special Price This item is already at our best price.
Subtotal:
38 in stock - ready to ship

Available Sizes & Options

See all Steel T-Bar Cone Diffusers →
24 x 24-inch White Steel T-bar cone diffuser, front view

Fits 24"x24" White Steel T-Bar Drop Ceiling Diffuser, 2x2 Lay-In 3-Cone, 12" Round Neck

$59.99
24 x 24-inch White Steel T-bar cone diffuser, front view
24 x 24-inch White Steel T-bar cone diffuser, front view 2
24 x 24-inch White Steel T-bar cone diffuser, rear view
24 x 24-inch White Steel T-bar cone diffuser, damper mechanism detail
24 x 24-inch White Steel T-bar cone diffuser, mounting clip detail
24 x 24-inch White Steel T-bar cone diffuser, damper lever detail
24 x 24-inch White Steel T-bar cone diffuser, damper mechanism detail 2
24 x 24-inch White Steel T-bar cone diffuser, mounting tab detail

Fits 24"x24" White Steel T-Bar Drop Ceiling Diffuser, 2x2 Lay-In 3-Cone, 12" Round Neck

$59.99
Description
Description
x

Product Overview

The 24"W x 24"H white steel T-bar cone diffuser carries supply air into the room through a ceiling opening. Powder-coated steel resists dents and rust for years of use, a stronger choice than lightweight plastic covers. Select this T-bar cone diffuser by its neck size size, not the overall face size, so it seats correctly on the first fit.

Key Features

  • Steel construction: Steel keeps the T-bar cone diffuser rigid during installation and resists warping over time.
  • White finish: The white finish coordinates with common flooring, trim, and hardware.
  • 3 Coned cone: The 3 coned configuration widens the supply-air throw across the ceiling.
  • Right-fit sizing: Ordered by neck size, this T-bar cone diffuser matches standard duct dimensions and cuts wrong-size returns.

Dimensions and Specifications

Product type T-Bar Cone Diffuser
Airflow function Supply air
Nominal opening 24"W x 24"H
Overall face dimensions 23-3/4"W x 23-3/4"H
Material Steel
Finish White
Mounting location Ceiling
Cone type 3 Coned
Airflow control Fixed
Order by Neck Size
Pack quantity 1
MPN 910103-8
Brand AirGrilles.com

Is This the Right Vent for Your Opening?

Choose this T-bar cone diffuser if you need a supply-air vent for a ceiling opening. This T-bar cone 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 drops into a standard 24x24 inch (2 feet by 2 feet) T-bar ceiling grid.

How to Measure for This Vent

This diffuser drops into a standard 24 x 24 inch T-bar ceiling grid. Confirm your grid openings are 2 by 2 feet, then match the 24"W x 24"H neck to your duct collar. The panel face measures 23-3/4"W x 23-3/4"H.

Installation

Position the T-bar cone diffuser over the duct neck 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 T-bar cone diffuser
  • Mounting screws

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

Care and Maintenance

Clean the T-bar cone 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 t-bar cone diffuser matches your opening and airflow need.

Option Best for Material Installation
This t-bar cone diffuser Drop-ceiling supply (24x24 grid) Steel 24x24 T-bar grid
Return air grille Return-air openings Steel Wall or ceiling
Wall/ceiling supply register Wall or ceiling supply openings Steel Wall or ceiling
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.
Technical Data
Technical Data
x

Airflow Performance Data

Duct Size (in)An (sq ft)Ak (sq ft)MetricFace Velocity (FPM)
400.0500.0600.0700.0800.0900.01000.01200.01400.01600.0
6"0.200.76Air Volume (CFM)80100120140160180200240280320
Static Pressure — damper retracted (in. w.g.)0.0240.040.0560.0720.10.1160.1440.220.2960.4
Static Pressure — damper extended (in. w.g.)0.0080.0160.0240.0320.0480.060.0760.1160.1560.208
Throw — damper retracted (ft)233456681012
Throw — damper extended (ft)234456791113
8"0.350.88Air Volume (CFM)140172210245280315350420490560
Static Pressure — damper retracted (in. w.g.)0.0280.0440.0640.0880.120.1520.1880.2720.3960.5
Static Pressure — damper extended (in. w.g.)0.0160.0240.0360.0480.0720.0920.1080.160.2320.32
Throw — damper retracted (ft)45678910121416
Throw — damper extended (ft)456891012141720
10"0.541.16Air Volume (CFM)216270324378432486540648756864
Static Pressure — damper retracted (in. w.g.)0.0440.0760.0960.1280.1720.2240.260.3680.50.64
Static Pressure — damper extended (in. w.g.)0.0280.0440.060.0840.1120.1360.1680.2240.2840.46
Throw — damper retracted (ft)67910121315172023
Throw — damper extended (ft)68911131517212529
12"This model0.791.61Air Volume (CFM)31239046854662470278093610921248
Static Pressure — damper retracted (in. w.g.)0.0560.0840.1240.1680.220.280.3360.4760.6480.808
Static Pressure — damper extended (in. w.g.)0.040.060.0880.1120.1360.1760.2120.3080.4160.528
Throw — damper retracted (ft)891112141518212427
Throw — damper extended (ft)9111214161821252730
14"1.072.03Air Volume (CFM)4285356427498569631070128414981712
Static Pressure — damper retracted (in. w.g.)0.080.1280.1720.2280.2760.340.4640.6440.8121.004
Static Pressure — damper extended (in. w.g.)0.0640.0840.1160.1360.180.2120.30.4080.5240.696
Throw — damper retracted (ft)891213151618222528
Throw — damper extended (ft)10111315171922262932
Values are given across face velocities (FPM). Ak = effective area, An = neck area. Static pressure in inches of water gauge (in. w.g.); throw in feet. The highlighted row is this product’s size. A dash (–) means the value is not published.

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