Hart & Cooley 672 30X14 043376 White Return Air Grille

The Hart & Cooley 43376 is a 672 series return air grille measuring 30 by 14 inches nominal, finished in white steel.

Return grilles are occasionally fitted with a damper by installers seeking to balance a system, and this warrants a caution. Balancing is performed on the supply side, at the branch dampers or at the supply registers, where restricting one outlet redirects air to others. Restricting a return does not balance anything; it simply reduces the total air the system can move, raising static pressure and reducing airflow across the coil.

Where a system has multiple returns and one is drawing disproportionately, the remedy is generally to correct the return duct sizing rather than to throttle a grille.

A related point applies to occupants closing return grilles in unused rooms. Where a return is fitted with any adjustable element, someone will eventually close it, and the system will run against the resulting restriction indefinitely without anyone connecting the two. Fixed bar return grilles avoid the possibility.

The 30 by 14 inch size passes a substantial airflow through a wide opening.

The 672 series has no filter frame, so the system filter must be located at the air handler.

Applications include residential and light commercial return air installations in walls, ceilings, and soffits.

Brand

Hart & Cooley

SKU

43376

Category

Return Air Grilles

Weight

5.3 lbs

Dimensions

31.75" x 15.75" x 0.31"

Price

$77.00

Availability

In stock

Rating

4.5 / 5.0