PST Jets will produce the FOD screen for J600R and J1300R. Production takes time so I did a quick search on the internet and this is a sample of filters that can be used. They usually come in 60,70,90, and 110 mm sizes. 90mm is perfect for J600R while 110mm will fit the J1300R.
http://www.wholesalecentral.com/eagl...6catid%3D69077
Regards,
Kraivuth S.