This is a 36" gravity shutter built to mount on your exhaust fan housing, opening automatically when the fan runs and closing when it shuts off. It's made for facility and maintenance teams who need to stop backdrafts, pests, and debris from entering a building through an idle exhaust fan.
This shutter is a genuine Polar Cool replacement component built for warehouse, industrial, and commercial exhaust fan installations. The G90 galvanized steel frame resists corrosion in harsh or outdoor-adjacent environments, while the aluminum vanes keep the moving parts light enough to open and close with minimal fan back-pressure. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Critical Fitment & Requirements
- Shutter size: 36" — matches 36" exhaust fan openings.
- Designed specifically for use with Exhaust Fan 6603-7011.
- Frame: G90 galvanized steel. Vanes: lightweight aluminum.
- Removable via two clips for maintenance and cleaning access.
- Does NOT list compatibility with any exhaust fan model other than 6603-7011 — confirm your fan's mounting configuration before ordering.
- Not designed for fan sizes other than 36" — verify your fan's opening size before purchase.
Key Benefits
- G90 galvanized steel frame resists corrosion for long service life.
- Lightweight aluminum vanes move with minimal air restriction.
- Self-opening and self-closing operation — no manual adjustment needed.
- Dual independent rail systems keep vanes on each side opening uniformly.
- Two-clip removable design speeds up cleaning and inspection.
- Blocks drafts, pests, and debris when the fan is off.
| Spec | Value | Unit |
|---|---|---|
| Shutter Size | 36 | in |
| Frame Material | G90 galvanized steel | - |
| Vane Material | Lightweight aluminum | - |
| Compatible Fan Model | 6603-7011 | - |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: Exhaust Fan 6603-7011 and 36" exhaust fan openings with matching mounting configuration.
- Does NOT fit: exhaust fans sized other than 36", or fans with mounting configurations that don't match 6603-7011.
- Verify fan size and mounting configuration before ordering — this shutter is not a universal fit.
| Item | Detail |
|---|---|
| Frame Corrosion Protection | G90 galvanized steel coating |
| Maintenance Access | Two-clip removable design for inspection/cleaning |
FAQ
Will this shutter fit my 36-inch exhaust fan?
It's designed specifically for use with Exhaust Fan 6603-7011. Confirm your fan size (36") and mounting configuration match before ordering.
What are the vanes and frame made of?
The frame is G90 galvanized steel for corrosion resistance. The vanes are lightweight aluminum for smooth, self-opening and self-closing operation.
Does this shutter open and close automatically?
Yes. Dual independent rail systems act as counterweights, holding the vanes open uniformly while the fan runs and closing them when the fan shuts off.
How do I remove the shutter for cleaning?
It's held in place with two clips, so you can remove it without tools for inspection, cleaning, or maintenance.
Can I use this shutter with a different brand or size of exhaust fan?
The manufacturer designates this shutter for use with Exhaust Fan 6603-7011 and 36" exhaust fans specifically. [NEEDS VERIFICATION] for compatibility with any other fan model or size.
Warranty & Registration
Manufacturer warranty terms for this part are not detailed in the available product data. [NEEDS VERIFICATION] — please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for the manufacturer's full warranty terms. If you can't find what you need there, ask us before you order — we always reply back.
