4 Hour Fire Rated Pressure Relief Vents 
We are able to offer a complete range of Pressure Relief Vents which can be used both for Inert & Chemical Agents. We have chosen only to produce a two way vent which means its simple to chose a product. 
The product is manufactured to a very high standard in a UK factory. 
Our products are 4 hour fire rated to BS EN 1364-5 2017. 
We also have a range of weather louvres to complement the range of vents with our products to follow in the future. 
In addition we also offer a complete range of low & high security grilles for each of the vents. 
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