[MDF FIRE RATED FRAMES]

On my recent FRA Course I was told that fire rated MDF Frames can only be used on private premises and not in commercial buildings, can someone confirm and elaborate please.

 

cheers

[Intumescent air transfer blocks]

Tom

 

Thanks for your reply.

 

[Intumescent air transfer blocks]

Hi

Hopefully a simple question, I have an odd size aperture for air transfer in a fire door without intumescent block's. The new blocks I can order are all square, 

Can I cut and fit a block to make up the hole? 

 

Regards