The IL35 louver damper has a 5" deep frame and features:
- Styrofoam blade insulation, which provides energy savings.
- "Interlocking design" steel construction with no bolts, screws, or rivets to shake loose.
- Shake proof, low maintenance linkage.
- Plated axles positively locked to blade.
- Internally braced frame corners to reduce racking.
- Blade seals that are mechanically locked into the blade edge.
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