4 x 8-inch White Steel floor supply register, front view
4 x 8-inch White Steel floor supply register, dimensions
4 x 8-inch White Steel floor supply register, packaging
4 x 8-inch White Steel floor supply register, angled view
4 x 8-inch White Steel floor supply register, rear view
4 x 8-inch White Steel floor supply register, rear view 2
4 x 8-inch White Steel floor supply register, damper lever detail
4 x 8-inch White Steel floor supply register, damper mechanism detail
4 x 8-inch White Steel floor supply register, louver detail
4 x 8-inch White Steel floor supply register, frame corner detail
4 x 8-inch White Steel floor supply register, front view
4 x 8-inch White Steel floor supply register, dimensions
4 x 8-inch White Steel floor supply register, packaging
4 x 8-inch White Steel floor supply register, angled view
4 x 8-inch White Steel floor supply register, rear view
4 x 8-inch White Steel floor supply register, rear view 2
4 x 8-inch White Steel floor supply register, damper lever detail
4 x 8-inch White Steel floor supply register, damper mechanism detail
4 x 8-inch White Steel floor supply register, louver detail
4 x 8-inch White Steel floor supply register, frame corner detail

Item # 510101-33

4"x8" White Steel Floor Register, Walkable Heavy-Duty Louvered Vent Cover with Damper

$12.19
$0.00
$12.19
Order By Duct Opening Measurements4"W x 8"H
Outer Dimensions 5-3/4"W X 9-3/4"H overall faceplate size
Bulk Pricing
2-1011-2021-4950+100+
$11.59$11.22$10.85$10.37
Subtotal:

Available Sizes & Options

See all Steel Floor Supply Registers →
4 x 8-inch White Steel floor supply register, front view

4"x8" White Steel Floor Register, Walkable Heavy-Duty Louvered Vent Cover with Damper

$12.19
4 x 8-inch White Steel floor supply register, front view
4 x 8-inch White Steel floor supply register, dimensions
4 x 8-inch White Steel floor supply register, packaging
4 x 8-inch White Steel floor supply register, angled view
4 x 8-inch White Steel floor supply register, rear view
4 x 8-inch White Steel floor supply register, rear view 2
4 x 8-inch White Steel floor supply register, damper lever detail
4 x 8-inch White Steel floor supply register, damper mechanism detail
4 x 8-inch White Steel floor supply register, louver detail
4 x 8-inch White Steel floor supply register, frame corner detail

4"x8" White Steel Floor Register, Walkable Heavy-Duty Louvered Vent Cover with Damper

$12.19
Description
Description
x

Product Overview

The 4"W x 8"H white steel floor register carries supply air into the room through a floor 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 floor 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 floor 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 damper controls the volume of air (open to closed).
  • Walkable strength: The reinforced core supports foot traffic, which suits floor openings in busy rooms.
  • Right-fit sizing: Ordered by duct opening size, this floor register matches standard duct dimensions and cuts wrong-size returns.

Dimensions and Specifications

Product type Floor Register
Airflow function Supply air
Nominal opening 4"W x 8"H
Overall face dimensions 5-3/4"W X 9-3/4"H
Material Steel
Finish White
Mounting location Floor
Airflow control Adjustable damper
Order by Duct Opening
Pack quantity 1
MPN 510101-33
Brand AirGrilles.com

Is This the Right Vent for Your Opening?

Choose this floor register if you need an adjustable supply-air vent for a floor opening. This floor register carries supply air and mounts on floor surfaces. It is not designed for 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 5-3/4"W X 9-3/4"H.

Installation

Set the floor register into the floor opening so the face rests level with the floor. No screws are required; the register drops in and its flange keeps it seated. Lift it out by the face for cleaning whenever needed.

What's Included

  • 1 x floor register

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

Care and Maintenance

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

Option Best for Material Installation
This floor register Floor supply openings Steel Floor
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)Ak (sq ft)MetricFace Velocity (FPM)
300.0400.0500.0600.0700.0800.0900.01000.0
Pressure Loss (in. w.g.)all sizes0.0040.0080.0160.0240.0280.040.0520.06
2×100.094Air Volume (CFM)2838475666758594
Spread (ft)345678910
Throw (ft)4567891011
2×120.110Air Volume (CFM)33445566778899110
Spread (ft)4667891011
Throw (ft)56789101112
2×140.125Air Volume (CFM)3850637588100113125
Spread (ft)46778101112
Throw (ft)578910111213
3×100.137Air Volume (CFM)4155698296110123137
Spread (ft)46789101112
Throw (ft)578910111213
4×8This model0.150Air Volume (CFM)45607590105120135150
Spread (ft)45789101113
Throw (ft)6781011121314
4×100.170Air Volume (CFM)516885102119136153170
Spread (ft)567810111315
Throw (ft)6791112131517
4×12 / 6×80.200Air Volume (CFM)6080100120140160180200
Spread (ft)6791112141517
Throw (ft)568910111314
4×140.230Air Volume (CFM)6992115138161184207230
Spread (ft)78101113161719
Throw (ft)6781011131415
6×100.247Air Volume (CFM)7499124148173198222247
Spread (ft)6891213151719
Throw (ft)5781011131415
6×120.285Air Volume (CFM)86114143171200228257285
Spread (ft)79101315171922
Throw (ft)6891112151618
6×140.335Air Volume (CFM)101134168201235268302335
Spread (ft)89111316182022
Throw (ft)68101213151718
8×140.406Air Volume (CFM)122162203244284325365406
Spread (ft)910111417182123
Throw (ft)78101213151719
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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