AAF HermanNelson IM 725 - Page 4

4 IM 725 (1-02)
Figure 3 – Horizontal and Vertical Blade Louvers, Without Flange
Figure 4 – Horizontal and Vertical Blade Louvers, Without Flanges With Grille or With Flange Without Grille
Louver drain lip
Grille/Louver with weep hole
Vertical Blade Louver
Horizontal Blade Louver
Flange
Flange
Outside Air
Outside Air
Outside Air
Bird Screen On Side Toward Unit
Vertical Louver with Flange,
without Grille
Horizontal Louver without
Flange, with Grille
CAUTION
!
Locate Weep Hole or Drain Lip at bottom of louver to allow
proper drainage.