What Is an Annulus?

❓What Is an Annulus?
Are you new to the industry seeking to expand your understanding of terminology? Or perhaps you're simply looking to brush up on your knowledge? In this video, Alec Purdie (Technical Manager) delves into the term 'annulus', commonly used on site.
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View our glossary: quelfire.co.uk...
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The right firestopping system, installed correctly, saves lives. At Quelfire, we have a friendly and honest team who are always willing to help with problems faced by the construction industry. We provide support from planning through design to installation and aim to answer any enquiries within one working day.
If you do need any help, please get in touch with our technical team at [e-mail].
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