Gary Morley Posted February 11, 2019 Report Share Posted February 11, 2019 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 Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted February 13, 2019 Report Share Posted February 13, 2019 First of all what type of fire door are we discussing a FD30 or FD30s fire door. If it is a FD30 door then intumescent air transfer grill could be acceptable and to do what you suggest I would contact the manufacturer to obtain their advice. Quote Link to comment Share on other sites More sharing options...
Gary Morley Posted February 14, 2019 Author Report Share Posted February 14, 2019 Tom Thanks for your reply. Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted February 21, 2019 Report Share Posted February 21, 2019 No Prob. Quote Link to comment Share on other sites More sharing options...
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