Unfortunately, unlike HD, Jayco doesn't publish an accessories catalog. The standard answer is "contact your dealer who can order this". That frustrates me because I am not very fond of my local dealer. Several times, I have tried to get information on something specific that Jayco uses but the dealer would never get back to me.
If you post what you're looking for, others may know the OEM part or a suitable after-market that will accomplish what you're trying to do.
Mike, Sue, Sissy and Little Man
2015 Ford F350 Lariat FX4 6.7 CC DRW
2015 Eagle Premier 351RSTS