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Systemair RAW 350 Horizontal Discharge Roof Cowl – GRP Weatherproof Roof Terminal
The Systemair RAW 350 Horizontal Discharge Roof Cowl is a robust commercial roof ventilation terminal manufactured from UV-stabilised glass reinforced polyester (GRP), providing exceptional durability, corrosion resistance, and long-term weather protection.
Designed for demanding commercial and industrial environments, this horizontal discharge roof cowl can operate as a passive terminal or be paired with a Systemair AW plate axial fan to form a powered extract or supply ventilation solution—making it ideal for factories, schools, kitchens, leisure centres, and general building ventilation systems.
✅ Key Features & Benefits
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UV-Stabilised GRP Construction – Lightweight, corrosion-free and suitable for external installation
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Horizontal Discharge Design – Efficiently directs airflow away from the roof surface
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Bird Guard Included – Prevents debris and wildlife ingress as standard
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Terminal or Powered Use – Install alone or combine with an axial fan
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Optional Colour Finishes – Available in BS or RAL colours on request
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Commercial-Grade Performance – Backed by Systemair with 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 facilities and sports halls
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Plant rooms
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General extract or supply systems
⚙️ Installation Options
The RAW 350 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
Compatible accessories include:
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Back Draught Shutter – Provides an airtight seal when the fan is not operating
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Purlin Box – Forms a secure roof upstand for mounting
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Soaker Sheet – Matches existing roof profiles for weather-tight installation
🎨 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 to suit 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 | 8.5 kg |
| Dimensions (H × W × D) | 380 mm × (660 / 695 mm) × (660 / 695 mm) |
| Base Size | 660 / 695 mm Square |
| Applications | Factories, Schools, Kitchens, Leisure |
📄 Manuals & Guides
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Systemair RAW Roof Cowl 350 Installation Manual
🚀 Why Choose the Systemair RAW 350 Roof Cowl?
If you’re looking for a large commercial roof ventilation cowl, GRP roof terminal for axial fans, or a weatherproof horizontal discharge roof vent, the RAW 350 provides outstanding performance, installation flexibility, and long-term reliability from one of the industry’s most trusted manufacturers.
