This is a direct-fit replacement fiberglass fan blade for current PolarCool 36" evaporative coolers. If your unit's airflow has dropped off or the original prop is cracked or chipped, this red 3-blade prop restores performance and bolts up to the same Vosterman motor your cooler already uses.
Fiberglass props take a beating in warehouse and outdoor duty - UV exposure, dust, and constant rotation all shorten the life of a stock blade. This 3-blade design replaces worn or damaged propellers on current-production PolarCool 36" units without modification to the motor mount. 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
- 36" diameter, 3-blade fiberglass propeller construction (red blade design).
- Engineered specifically for the Vosterman motor, SKU 6422-6023.
- Fits current PolarCool Classic and Pro 36" evaporative coolers.
- Fits 36" standard line units (black powder coated and stainless variants) and the Zone 11K (36" gray rotomolded plastic model).
- Includes mounting hardware (key or dowel pin) for motor shaft attachment.
- NOT verified for use with prior/legacy 36" PolarCool prop designs - this is the current model only.
- NOT designed for motors other than the Vosterman 6422-6023 - confirm your motor SKU before ordering.
Key Benefits
- Genuine PolarCool replacement component built to original fitment specs.
- Fiberglass blade construction holds up under continuous outdoor and industrial duty cycles.
- Direct-fit design simplifies installation and reduces service downtime.
- Ships complete with mounting hardware (key or dowel pin) - no separate hardware order needed.
- Restores rated airflow performance on PolarCool 36" evaporative coolers and swamp coolers.
| Spec | Value | Unit |
|---|---|---|
| Diameter | 36 | in |
| Blade Count | 3 | blades |
| Blade Color | Red | - |
| Material | Fiberglass | - |
| Compatible Motor | Vosterman, SKU 6422-6023 | - |
| Included Hardware | Key or dowel pin | - |
| Primary SKU | 6403-5605 | - |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: PolarCool Classic 36" (current model).
- Fits: PolarCool Pro 36" (current model).
- Fits: 36" standard line, black powder coated and stainless models.
- Fits: Zone 11K, 36" gray rotomolded plastic model.
- Designed for: Vosterman motor, SKU 6422-6023.
- Does NOT fit: prior/legacy 36" PolarCool propeller designs - verify current model before ordering.
- Does NOT fit: motors other than the Vosterman 6422-6023 without verification.
| Item | Detail |
|---|---|
| Construction Material | Fiberglass (blade) |
| Installation Hardware | Key or dowel pin, included |
| Installation Guidance | Follow manufacturer installation guidelines for safe, reliable performance; inspect motor shaft and mounting hardware during install |
FAQ
Will this prop fit my PolarCool 36" evaporative cooler?
It fits the current PolarCool Classic and Pro 36" models, the 36" standard line (black powder coated and stainless), and the Zone 11K (36" gray rotomolded plastic model). Confirm you have the current-model version before ordering, since PolarCool has produced other 36" prop designs in the past.
What motor is this propeller designed to work with?
It is engineered for use with the Vosterman motor, SKU 6422-6023. Check your motor's SKU before purchase to confirm a match.
Does this come with mounting hardware?
Yes. It ships with mounting hardware, either a key or a dowel pin, for secure attachment to the motor shaft.
What is this propeller made of?
It is a fiberglass propeller, built for continuous duty in industrial and outdoor cooling environments.
Is this the same prop used on the Zone 11K model?
Yes, this 3-blade red prop is compatible with the Zone 11K 36" gray rotomolded plastic model, in addition to the 36" standard and Pro lines.
Warranty & Registration
Manufacturer warranty terms for this component are not detailed in available product data [NEEDS VERIFICATION]. Please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for the full manufacturer warranty terms and registration process. Ask us before you order if you need help confirming coverage for your specific unit - we always reply back.
