Latest revision as of 17:17, 3 July 2025
Division C - Accepted Materials
VMAX-303 Sloped Roof Ventilator
by Ventilation Maximum Ltd.
| Material Acceptance and Product Details
The information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications, nor is this material recommended or endorsed by the Guarantor. The preparation of a detailed specification is the responsibility of the Design Authority.
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- Manufacturer
- Ventilation Maximum Ltd.
- Accepted for the RoofStar Guarantee Program
- January 19, 2024
- Accepted for application in
- Water-shedding Roof Systems
- Acceptance Criteria
- None
- Product Summary
- The VMAX-303 is a static roof ventilator designed for installation on water-shedding roof systems. It is fabricated with a built-in stormproof deflector system available in a variety of sizes and finish options. The VMAX-303 is designed to prevent the accumulation of moisture and hot air in an attic by creating a minimum evacuation rate of 266 CFM (model 303-12) with wind speeds as low as 6 km/h (4 mph).
- (adapted from the Technical Data Sheet)
- Conditions and Limitations
- None (This product may be flashed into the roof field using materials and methods found in Part 12 of the applicable Standard (Division B))
- Technical Data Sheet
- Click the "PDF" icon to open the TDS in a new window.
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