The ELM811 Adjustable Louver is 4" deep and has a 45 degree blade angle. It features:
- 38% free area.
- Low torque operation and architecturally pleasing appearance with low leakage performance.
- Concealed blade linkage is protected from weather exposure and reduces required installation depth.
- Blade and jamb seal options provide tight blade-to-blade and blade-to-frame closure.
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