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.
UV-Stabilised GRP Construction – Lightweight, corrosion-free and suitable for external installation
Horizontal Discharge Design – Efficiently directs airflow away from the roof surface
Bird Guard Included – Prevents debris and wildlife ingress as standard
Terminal or Powered Use – Install alone or combine with an axial fan
Optional Colour Finishes – Available in BS or RAL colours on request
Commercial-Grade Performance – Backed by Systemair with a 1-year warranty
Perfect for:
Factory and warehouse ventilation
Commercial kitchens
Schools and colleges
Leisure facilities and sports halls
Plant rooms
General extract or supply systems
The RAW 350 roof cowl may be installed:
As a stand-alone roof terminal, or
In conjunction with a Systemair AW plate axial fan to create a powered ventilation unit.
Compatible accessories include:
Back Draught Shutter – Provides an airtight seal when the fan is not operating
Purlin Box – Forms a secure roof upstand for mounting
Soaker Sheet – Matches existing roof profiles for weather-tight installation
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.
| 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 |
Systemair RAW Roof Cowl 350 Installation Manual
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.
Next Day Delivery
Stock items ordered before 1pm can be dispatched on a
next working day delivery service, subject to stock
availability and carrier service.
Delivery charges are calculated at checkout.
Collection Available
Orders can be collected from our
Haslingden, Lancashire warehouse.
Please contact us before travelling to confirm your order is ready for collection.
Need help choosing the correct product, size or specification? Our team is available for product and technical advice.
Tel:
01706 335330
Email:
sales@ductingsupplies.com
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