12 x 6-inch Brown Steel triangle corner baseboard supply register, angled view
12 x 6-inch Brown Steel triangle corner baseboard supply register, dimensions
12 x 6-inch Brown Steel triangle corner baseboard supply register, front view
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view 2
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view 3
12 x 6-inch Brown Steel triangle corner baseboard supply register, damper lever detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, mounting screw detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, damper mechanism detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, angled view
12 x 6-inch Brown Steel triangle corner baseboard supply register, dimensions
12 x 6-inch Brown Steel triangle corner baseboard supply register, front view
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view 2
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view 3
12 x 6-inch Brown Steel triangle corner baseboard supply register, damper lever detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, mounting screw detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, damper mechanism detail

Item # 310108-3

12"x6" Brown Steel Triangular Baseboard Grille, with Damper, 3-13/16" Depth

$20.69
$20.69
Order By Duct Opening Measurements12"W x 6"H
Outer Dimensions 13-3/4"W X 6-5/8"H overall faceplate size
Bulk Pricing
2-1011-2021-4950+100+
$17.59$16.56$15.52$14.49
Subtotal:
57 in stock - ready to ship

Available Sizes & Options

See all Triangle Corner Baseboard Supply Register →
12 x 6-inch Brown Steel triangle corner baseboard supply register, angled view

12"x6" Brown Steel Triangular Baseboard Grille, with Damper, 3-13/16" Depth

$20.69
12 x 6-inch Brown Steel triangle corner baseboard supply register, angled view
12 x 6-inch Brown Steel triangle corner baseboard supply register, dimensions
12 x 6-inch Brown Steel triangle corner baseboard supply register, front view
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view 2
12 x 6-inch Brown Steel triangle corner baseboard supply register, rear view 3
12 x 6-inch Brown Steel triangle corner baseboard supply register, damper lever detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, mounting screw detail
12 x 6-inch Brown Steel triangle corner baseboard supply register, damper mechanism detail

12"x6" Brown Steel Triangular Baseboard Grille, with Damper, 3-13/16" Depth

$20.69
Description
Description
x

Product Overview

The 12"W x 6"H brown steel triangle corner baseboard supply register carries supply air into the room through a baseboard opening. Powder-coated steel resists dents and rust for years of use, a stronger choice than lightweight plastic covers. A built-in damper adjusts or shuts the airflow, so comfort can be set room by room. Select this triangle corner baseboard supply register by its duct opening size, not the overall face size, so it seats correctly on the first fit.

Key Features

  • Steel construction: Steel keeps the triangle corner baseboard supply register rigid during installation and resists warping over time.
  • Brown finish: The brown finish coordinates with common flooring, trim, and hardware.
  • Adjustable airflow: The built-in damper controls the volume of air (open to closed).
  • 1-Way air pattern: The 1-way throw sends conditioned air where the space needs it.
  • Right-fit sizing: Ordered by duct opening size, this triangle corner baseboard supply register matches standard duct dimensions and cuts wrong-size returns.

Dimensions and Specifications

Product type Triangle Corner Baseboard Supply Register
Airflow function Supply air
Nominal opening 12"W x 6"H
Overall face dimensions 13-3/4"W X 6-5/8"H
Material Steel
Finish Brown
Mounting location Baseboard
Airflow pattern 1-Way
Airflow control Adjustable damper
Order by Duct Opening
Pack quantity 1
MPN 310108-3
Brand AirGrilles.com

Is This the Right Vent for Your Opening?

Choose this triangle corner baseboard supply register if you need an adjustable supply-air vent for a baseboard opening. This triangle corner baseboard supply register carries supply air and mounts on baseboard 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.

How to Measure for This Vent

Measure the open space between the baseboard and the floor where air passes, then match it to the 12"W x 6"H size above. Do not measure the outer flange. The overall face measures 13-3/4"W X 6-5/8"H.

Installation

Position the triangle corner baseboard supply register over the duct opening with the louvers facing the room. Confirm the frame sits flush against the baseboard 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 triangle corner baseboard supply register
  • Mounting screws

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

Care and Maintenance

Clean the triangle corner baseboard supply register with a soft, damp cloth and mild soap. Avoid abrasive chemicals that can damage the brown finish. Dry the surface to keep moisture off the metal.

Compare Similar Options

Use this comparison to confirm the triangle corner baseboard supply register matches your opening and airflow need.

Option Best for Material Installation
This triangle corner baseboard supply register Baseboard supply openings Steel Baseboard
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.

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