Hi Sterling !

Welcome to SOI ,  I looked into replacing all the rat fur in my 16 ft I know you can get the info about that from scamps parts dept they will be able to give you what you need as far as yardage I decided not to do the whole 16 ft but did redo the door and was very pleased with how the rat fur worked for me .......I was also able to pull the original rat fur down from the ceiling and re glue it with 3m general purpose spray glue after the windows were removed ..... You can go to trailer modifications on the forum here and go to 1988 scamp rebuild and just scroll down the page and  I have posted some pictures of the door I did with the new rat fur .... I hope this helps