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Systemair RAW Horizontal Discharge Roof Cowl – GRP Weatherproof Roof Terminal
The Systemair RAW Horizontal Discharge Roof Cowl is a high-performance roof ventilation terminal manufactured from UV-stabilised glass reinforced polyester (GRP) for exceptional durability, corrosion resistance, and long-term weather protection.
Designed for commercial and industrial buildings, this lightweight yet rigid roof cowl can be used as a passive terminal or paired with an AW plate axial fan to create a powered extract or supply ventilation system—making it ideal for factories, schools, kitchens, leisure facilities and general ventilation applications.
✅ Key Features & Benefits
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UV-Stabilised GRP Construction – Lightweight, corrosion-free and suitable for harsh outdoor environments
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Horizontal Discharge Design – Promotes efficient airflow away from the roof surface
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Weather Resistant – Built for long-term external installation
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Bird Guard Included – Prevents debris and wildlife ingress as standard
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Flexible Installation – Use as a terminal or combine with an axial fan
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Colour Options Available – Supplied in Goosewing Grey, with BS or RAL colours available on request
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Trusted Manufacturer – Systemair quality with 1-year warranty
🏭 Suitable Applications
This commercial roof ventilation cowl is ideal for:
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Factory and warehouse ventilation
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Commercial kitchens
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Educational buildings
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Leisure centres and gyms
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Plant rooms
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General extract or supply systems
⚙️ Installation Options
The RAW roof cowl may be installed:
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As a stand-alone roof terminal, or
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In conjunction with a Systemair AW plate axial fan to form a powered ventilation unit.
🔧 Optional Accessories
Enhance your installation with compatible accessories:
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Back Draught Shutter – Prevents reverse airflow when the fan is switched off
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Purlin Box – Creates a secure roof upstand for mounting
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Soaker Sheet – Matches existing roof profiles for effective weather sealing
🎨 Finish & Colour Options
Supplied as standard in BS 00 A 05 Goosewing Grey.
Custom finishes in any BS or RAL colour are available at additional cost—perfect for architectural or project-specific requirements.
📊 Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Systemair |
| Mounting | Roof Mounted |
| Construction | UV-Stabilised GRP |
| Colour | Goosewing Grey (Standard) |
| Warranty | 1 Year Manufacturer |
| Bird Guard | Included |
| Weight | 4.25 kg |
| Dimensions (H × W × D) | 270 mm × (460 / 490 mm) × (460 / 490 mm) |
| Base Size | 460 / 490 mm Square |
| Applications | Factories, Schools, Kitchens, Leisure |
📄 Manuals & Guides
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Systemair RAW Roof Cowl 200 / 250 Installation Manual
