Roof Vents??

Thanks for the replies! It really doesn't look like there were any caps on the pipes unless they were the type that just pushed in with the metal tension springs, so that's what I just ordered. My old class A had caps that were screwed down, but this other design should work just fine. I'll wait to find a vent cover for the bathroom vent. Just need to make sure its never left open since it faces forward!
Thanks Again!