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Systemair RAW 800 Horizontal Discharge Roof Cowl – Extra-Large GRP Roof Vent Terminal
The Systemair RAW 800 Horizontal Discharge Roof Cowl is an extra-large commercial roof ventilation terminal manufactured from UV-stabilised glass reinforced polyester (GRP), providing exceptional structural strength, corrosion resistance, and long-term weather durability in exposed rooftop environments.
Engineered for very high-airflow industrial and commercial systems, this horizontal discharge roof cowl can be installed as a passive terminal or paired with a Systemair AW plate axial fan to create a powered extract or supply ventilation solution—making it ideal for factories, schools, kitchens, leisure centres, and large plant rooms.
✅ Key Features & Benefits
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UV-Stabilised GRP Construction – Lightweight yet extremely durable and corrosion-free
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Horizontal Discharge Design – Efficiently directs airflow away from roof surfaces
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Bird Guard Included – Prevents debris and wildlife ingress as standard
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Terminal or Powered Installation – Use standalone or combine with an axial fan
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Architectural Colour Options – BS or RAL finishes available on request
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Commercial-Grade Reliability – Manufactured by Systemair and backed by a 1-year warranty
🏭 Suitable Applications
Ideal for:
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Factory and warehouse ventilation
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Commercial kitchens
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Schools and colleges
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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 800 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 create 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 off
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Purlin Box – Forms a secure roof upstand for mounting
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Soaker Sheet – Matches roof profiles for a weather-tight finish
🎨 Finish & Colour Options
Supplied as standard in BS 00 A 05 Goosewing Grey.
Alternative 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 | 34 kg |
| Dimensions (H × W × D) | 750 mm × (1125 / 1170 mm) × (1125 / 1170 mm) |
| Base Size | 1125 / 1170 mm Square |
| Applications | Factories, Schools, Kitchens, Leisure |
📄 Manuals & Guides
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Systemair RAW Roof Cowl 800 Installation Manual
🚀 Why Choose the Systemair RAW 800 Roof Cowl?
If you’re searching for an extra-large commercial roof ventilation cowl, heavy-duty GRP roof terminal for axial fans, or a high-capacity horizontal discharge roof vent, the RAW 800 delivers superior durability, flexible installation, and proven Systemair engineering for demanding projects.
