Installing Louvers
Louver Details
Figure 6 – Horizontal and Vertical Blade Louvers, Without Flange, (see Caution below for louver blade orientation and drainage)
Outside Air
Bottom
Horizontal Blade Louver
Figure 7 – Horizontal and Vertical Blade Louvers, Without Flanges With Grille or With Flange Without Grille
Outside Air
Horizontal Louver without
Flange, with Grille
Grille/Louver with weep hole
CAUTION
Locate Drain Lip at bottom of vertical louver to allow proper
drainage. For horizontal louvers, the louver blades should face
down for proper drainage. Bird screen should always be on
side toward unit.
IM 817-4
Bird Screen On Side Toward Unit
Outside Air
Vertical Louver with Flange, without Grille
Louver drain lip
Figure 8 – Rear of Horizontal Blade Louver with Birdscreens and
Flange.
Vertical Blade Louver
Flange
Flange
Page 7 of 60