20"W x 4"H

Item No:	Size (Duct Opening)	Neck Size	Material	Outer Dimensions	Color	Airflow Direction	Bulk Pricing						Order
Item No:	Size (Duct Opening)	Neck Size	Material	Outer Dimensions	Color	Airflow Direction	1	2-10	11-20	21-49	50+	100+	Order
210400-21	20"W x 4"H		Steel	21-3/4"W X 5-3/4"H	White	Adjustable	$33.00	$28.05	$26.40	$24.75	$23.10		Quantity for 20x4 Steel Adjustable Air Vent Cover \| Supply Register for Wall & Ceiling \| White \| Outer Dimension: 21-3/4"W X 5-3/4"H
421108-16	20"W x 4"H		Aluminum	21-3/4"W X 5-3/4"H	White	Adjustable	$49.99	$42.50	$40.00	$37.50	$35.00		Quantity for 20x4 Modern Aluminum Air Vent Covers & HVAC Grilles \| Wall & Ceiling \| White \| Outer Dimension: 21-3/4"W X 5-3/4"H

Let's get the fit right the first time