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Systemair RAW 1000 Horizontal Discharge Roof Cowl – Ultra-High Capacity GRP Roof Vent Terminal
The Systemair RAW 1000 Horizontal Discharge Roof Cowl is an ultra-large commercial roof ventilation terminal manufactured from UV-stabilised glass reinforced polyester (GRP), providing exceptional rigidity, corrosion resistance, and long-term weather durability for the most demanding rooftop installations.
Designed 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—ideal for factories, schools, kitchens, leisure centres, and large plant rooms.
✅ Key Features & Benefits
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UV-Stabilised GRP Construction – Lightweight for its size, corrosion-free and built for external use
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Horizontal Discharge Design – Directs airflow efficiently 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 Performance – Manufactured by Systemair and backed by a 1-year warranty
🏭 Suitable Applications
Perfect 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 sports halls
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Plant rooms
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General extract or supply systems
⚙️ Installation Options
The RAW 1000 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
Complete 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 – Creates 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—ideal for architectural or project-specific specifications.
📊 Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Systemair |
| Mounting | Roof Mounted |
| Construction | UV-Stabilised GRP |
| Colour | Goosewing Grey (Standard) |
| Warranty | 1 Year Manufacturer |
| Bird Guard | Included |
| Height | 900 mm |
| Dimensions (W × D) | (1370 / 1405 mm) × (1370 / 1405 mm) |
| Weatherskirt Base Size | 1370 / 1405 mm Square |
| Weight | 50 kg |
| Applications | Factories, Schools, Kitchens, Leisure |
📄 Manuals & Guides
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Systemair RAW Roof Cowl 1000 Installation Manual
🚀 Why Choose the Systemair RAW 1000 Roof Cowl?
If you’re specifying an ultra-high capacity commercial roof ventilation cowl, a heavy-duty GRP roof terminal for axial fans, or a large horizontal discharge roof vent, the RAW 1000 offers industry-leading durability, flexible installation, and proven Systemair engineering for major projects.
