Door lining internal dimension

fattony · 11 Apr 2021

Hi

for a 610mm door what would the internal dimension of the door lining need to be, looking at a 762mm lining it measures 770mm so I’m assuming it needs to be 618mm but want to double check

thanks

Deleted member 174758 · 11 Apr 2021

In a fire door your gap around the door on the sides and at the top is normally 3mm, so a 610mm wide door needs a casing or lining 616mm wide internally (approx. 680mm externally allowing for a 32mm or 1-1/4in thick casing or lining)

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Door lining internal dimension

fattony

Deleted member 174758

DIYnot Local

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