We have 3 slides on our 5er, 2 have toppers but the kitchen slide is underneath the awning so they did not bother to put a topper on it. We have discussed putting one on, simply because when it is pouring rain we do not leave the awning out and the slide did leak. I have read some comments about the weight of the topper on the camper and if the camper can handle the extra weight, I can not comment on that, I simply don't have the knowledge,I would definitely check into that if it were me. I just know I would love to have the third slide covered as well. It does get dirty and as I said it did leak. We were in quite a wind storm one night, up on a hill parked for the night and the toppers do snap and pop in the wind. For me, I will take the few nights that it may be a bit noisy. I do not like water leaks!! The night I mentioned we did put the slide in for the night, just because it was a bit noisy.