Why is there no FD30 linings for 686 doors?

[saintcroc]

It seems like all the providers stock 686mm fire doors, but only stock FD30 linings for 762mm and 838mm doors. Is there a reason for this? I'm contemplating just buying this one and putting in a new notch at the correct width. Is this common?

 

[Deleted member 174758]

It's maybe because 686 fire doors aren't that common, I suppose, and if uou think about it kits can only be made to accommodate 2 sizes. In my experience the most common sizes for FD30s are 2ft 6in and 2ft 9lin. If you can't get a kit, just get the nearest (larger) kit size and trench it - after all you can alway reduce the size, but wood doesn't stretch that well