Be aware. anyone who has had their slide out toppers installed by someone else make sure you look at your fasteners at the application I have in my subject line. if you see any rust on the head of the fastener that means two things , one , itís not stainless steel and two , water has gotten into the wall.I called carefree and asked them and they said that they come with stainless steel fasteners. I donít think American family Rv and Chesapeake use the proper screws when they installed them. I donít know what quality The ones that come with it are but they probably were not used. Also whoever installed it beside using putty tape should also have applied pure silicone caulk on each one of the screws before itís fastened to the side of the RV. Many of mine were completely Eaten away. Good stainless is expensive! I got oversized ones for mine. 106 screws
. All done now.