659 Return Air Filter Grille

All-steel construction
1/3" spaced fins set at 20 degrees
Effectively conceals filter
Use standard 1" thick disposable filters (not included)
Removable face for easy installation and cleaning
Equipped with adjustable filter retainers
Bright White Finish

 659FIL Return Air Filter Grille - Includes the Filter!

Each grille includes a one-inch, pre-installed fiberglass filter.

Average face velocity = 390 fpm, based on filter capacity rating of 2 CFM per square inch of gross filter area.  Free area averages 75% of grille core.  For quick calculation free area (sq. in.) = listed width x height x .75

Note:  When ordering, specify horizontal dimension first.

 
 
659 Standard Sizes

673FIL Sizes (inches)

HT

Width
  10 12 14 16 18 20 24 25 30 36
6                    
8                    
10 X                  
12   X       X X     X
14     X     X X X X  
16       X   X   X    
18         X   X      
20 X X X X   X X   X  
24   X X       X   X  
25     X X   X        
30     X     X X      
32                    
36   X                
659 Drawing

 
Engineering Data (PDF file)

Submittal Drawing (PDF file)

Free Area Chart (PDF file)

More Sidewall Registers & Grilles

Customer Service

Phone   800.433.6341 or 616.656.8200
Faxne   800.223.8461