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There is a fire damper in the same openings as other services, how can this be fire stopped?

As ducts and dampers are tested to a different standard to cables, pipes etc. they should therefore be separated from other services and installed into their own openings.

First port of call should be to contact the duct or damper manufacturers, as their tested solutions would supersede our advice.

In the absence of this, or if a combined seal is evident (different services types from multiple BS-EN testing standards, through a single opening in a compartment), we can offer engineering judgements only. Test evidence/install details from the damper manufacturer will be required to assist in the creation of an engineering judgement.