6 x 6-inch White Aluminum adjustable supply register, front view
6 x 6-inch White Aluminum adjustable supply register, front view 2
6 x 6-inch White Aluminum adjustable supply register, angled view
6 x 6-inch White Aluminum adjustable supply register, frame corner detail
6 x 6-inch White Aluminum adjustable supply register, frame corner detail 2
6 x 6-inch White Aluminum adjustable supply register, damper lever detail
6 x 6-inch White Aluminum adjustable supply register, damper mechanism detail
6 x 6-inch White Aluminum adjustable supply register, damper lever detail 2
6 x 6-inch White Aluminum adjustable supply register, front view
6 x 6-inch White Aluminum adjustable supply register, front view 2
6 x 6-inch White Aluminum adjustable supply register, angled view
6 x 6-inch White Aluminum adjustable supply register, frame corner detail
6 x 6-inch White Aluminum adjustable supply register, frame corner detail 2
6 x 6-inch White Aluminum adjustable supply register, damper lever detail
6 x 6-inch White Aluminum adjustable supply register, damper mechanism detail
6 x 6-inch White Aluminum adjustable supply register, damper lever detail 2

Item # 421108-21

6"x6" White Aluminum Adjustable Supply Register, Rust-Proof Supply Grille for Wall & Ceiling

$13.59
$0.00
$13.59
Order By Duct Opening Measurements6"W x 6"H
Outer Dimensions 7-3/4"W X 7-3/4"H overall faceplate size
Bulk Pricing
2-1011-2021-4950+100+
$11.56$10.88$10.20$9.52
Subtotal:
18 in stock - ready to ship

Available Sizes & Options

See all Aluminum Adjustable Supply Registers →
6 x 6-inch White Aluminum adjustable supply register, front view

6"x6" White Aluminum Adjustable Supply Register, Rust-Proof Supply Grille for Wall & Ceiling

$13.59
6 x 6-inch White Aluminum adjustable supply register, front view
6 x 6-inch White Aluminum adjustable supply register, front view 2
6 x 6-inch White Aluminum adjustable supply register, angled view
6 x 6-inch White Aluminum adjustable supply register, frame corner detail
6 x 6-inch White Aluminum adjustable supply register, frame corner detail 2
6 x 6-inch White Aluminum adjustable supply register, damper lever detail
6 x 6-inch White Aluminum adjustable supply register, damper mechanism detail
6 x 6-inch White Aluminum adjustable supply register, damper lever detail 2

6"x6" White Aluminum Adjustable Supply Register, Rust-Proof Supply Grille for Wall & Ceiling

$13.59
Description
Description
x

Product Overview

The 6"W x 6"H white aluminum supply register carries supply air into the room through a ceiling and sidewall opening. Extruded aluminum resists rust in humid rooms, 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 supply register 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 supply register rigid during installation and resists warping over time.
  • White finish: The white finish coordinates with common flooring, trim, and hardware.
  • Adjustable airflow: The built-in back damper controls the volume of air (from fully open to closed), so you can set airflow from a gentle breeze to a full flow. Where the register has adjustable blades, they deflect the throw left or right to aim the air.
  • Right-fit sizing: Ordered by duct opening size, this supply register matches standard duct dimensions and cuts wrong-size returns.

Dimensions and Specifications

Product type Supply Register
Airflow function Supply air
Nominal opening 6"W x 6"H
Overall face dimensions 7-3/4"W X 7-3/4"H
Material Aluminum
Finish White
Mounting location Ceiling and Sidewall
Airflow pattern Adjustable
Airflow control Adjustable damper
Order by Duct Opening
Pack quantity 1
MPN 421108-21
Brand AirGrilles.com

Is This the Right Vent for Your Opening?

Choose this supply register if you need an adjustable supply-air vent for a ceiling or sidewall opening. This supply register carries supply air and mounts on ceiling and sidewall 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

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 7-3/4"W X 7-3/4"H.

Installation

Position the supply register 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 supply register
  • Mounting screws

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

Care and Maintenance

Clean the supply register 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 supply register matches your opening and airflow need.

Option Best for Material Installation
This supply register Wall or ceiling supply openings Aluminum Wall or ceiling
Return air grille Return-air openings Steel Wall or ceiling
Floor supply register Floor supply openings Steel Floor
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)Ak (sq ft)MetricFace Velocity (FPM)
40050060070080090010001100120013001400160018002000
Pressure Loss (in. w.g.)all sizes0.0120.0160.0240.0320.040.0520.0640.0760.0920.1080.1240.1640.2040.252
8×40.162Air Volume (CFM)658197113130146162178194211227259292324
Throw (ft)79101114151619202224273033
6×6This model0.183Air Volume (CFM)7392110128146165183201220238256293329366
Throw (ft)791011.515161720212325273135
10×40.203Air Volume (CFM)82102122143163184204224245265286326367408
Throw (ft)79111314171821222426303336
8×6 / 12×40.248Air Volume (CFM)99124149174198223248273298322347397446496
Throw (ft)811131416192023242729333741
14×40.287Air Volume (CFM)115144172201230258287316344373402459517574
Throw (ft)911131517192324262930354043
10×60.315Air Volume (CFM)126158189221252284315347378410441504567630
Throw (ft)911141618222325283033364146
8×80.336Air Volume (CFM)134168202235269302336370403437470538605672
Throw (ft)1012151720222428293234404448
12×60.381Air Volume (CFM)152191229267305343381419457495533610686762
Throw (ft)1012151721222627303336414550
10×80.421Air Volume (CFM)168211253295337379421463505547589674758842
Throw (ft)1113161821252629333437434753
14×60.448Air Volume (CFM)179224269314358403448493538582627717806896
Throw (ft)1114161923242730333539435054
12×8 / 16×60.512Air Volume (CFM)2052563073584104615125636146667178199221024
Throw (ft)1215172123263032353941475359
10×100.528Air Volume (CFM)2112643173704224755285816346867398459501056
Throw (ft)1215192123272933353841485460
18×60.570Air Volume (CFM)22828534239945651357062768474179891210241140
Throw (ft)1215182224283033373943495561
14×80.591Air Volume (CFM)23629635541447353259165070976882794610641182
Throw (ft)1215192225283033374044505663
12×10 / 20×60.639Air Volume (CFM)256320383447511575639703767831895102211501278
Throw (ft)1316192325293236394245515865
16×80.684Air Volume (CFM)274342410479547616684752821889958109412311368
Throw (ft)1417202427303337414347535966
20×80.869Air Volume (CFM)348435521608695782869956104311301217139015641738
Throw (ft)1519242730353842455054616875
14×120.895Air Volume (CFM)358448537627716806895985107411641253143216111790
Throw (ft)1519222630343742455053616876
18×10 / 30×60.96Air Volume (CFM)3844805766727688649601056115212481344153617281920
Throw (ft)1621263033384246505560677582
16×12 / 24×81.071Air Volume (CFM)42653263874585195810641170127713831490170219152128
Throw (ft)1721253033374246505459667583
20×101.095Air Volume (CFM)43854865776787698610951205131414241533175219712190
Throw (ft)1822283234404448525763707887
36×61.15Air Volume (CFM)460575690805920103511501265138014951610184020702300
Throw (ft)1822283234404448525763707887
20×12 / 24×10 / 30×81.28Air Volume (CFM)5126407688961024115212801408153616641792204823042560
Throw (ft)1924293439455054596468778695
16×161.405Air Volume (CFM)5627038439841124126514051546168618271967224825292810
Throw (ft)20252935414651576370778592102
20×141.49Air Volume (CFM)59674589410431192134114901639178819372086238426822980
Throw (ft)22263138445055606570758595105
24×121.53Air Volume (CFM)61276591810711224137715301683183619892142244827543060
Throw (ft)22273239455156616671768697106
30×101.60Air Volume (CFM)64080096011201280144016001760192020802240256028803200
Throw (ft)23273440465257626872788898109
18×181.72Air Volume (CFM)688860103212041376154817201892206422362408275230963440
Throw (ft)242832434855606571748190101112
30×121.91Air Volume (CFM)764955114613371528171919102101229224832674305634383820
Throw (ft)252935475158626974788596105118
20×202.13Air Volume (CFM)8521065127814911704191721302343255627692982340838344260
Throw (ft)2731385155636876818592103112125
30×182.87Air Volume (CFM)11481435172220092296258328703157344437314018459251665740
Throw (ft)30374653596875828998107119134146
24×243.06Air Volume (CFM)12241530183621422448275430603366367239784284489655086120
Throw (ft)40465368788798106115120135148160178
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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