tkcas01 wrote:
I agree, you really don't notice the fabric so much as it up high.
I will offer another piece of unsolicited advise. If possible, have them install the unit so that the fabric will slope down from the side of the rig. Many get installed so the fabric is horizontal when the slide is extended and that allows water to pool on top of the topper. There is also a model that has some kind of peaking mechanism for the same reason - not sure how much extra that costs.
Good advice, unfortunately from the look of the OP's trailer it looks like the awning will be nearly flat. In that case make sure they keep the material as tight as possible. It takes effort but an extra turn of the awning before installing it on the slide helps a lot.
I would also strongly suggest you get white instead of black material. One of the great things these do is keep the sun and heat off the top of the slide and black may not do such a good job and won't last as long.