K
kirkgas
Sorry mate, you have to read the books again.
CORGI book (page 72) For DFEs - check the MIs as some models may not require any additional ventilation - or as per MIs.
VIPER (page F-4) Decorative fires may not need purpose provided ventilation where the MIs clearly identify this.
im sure sparra will qualify what he means, but my interpretation of what he is saying is that DFE'e need either NIL or 100cm2, not a calculated value of 15cm2 or anything else.