No. 15 Transit chest for No. 4 (T) Rifle Help

Hi

I have a No. 15 transit chest that has some of its felt around the lid missing, probably about 24 inches. I wonder if someone could point me in the direction to where it might find some replacement felt?

Also the contents label is missing, does any one have a scan of an original I could please have? or could tell me the size of an original, so i could attempt to make one my self.

Thanks

Unfortunately, difficult to scan, but dimensions are 28 X 9 cms.

Attachment 96801