Most Popular Insulator for 2018 Thor ACE Motorhome

So I give it five stars, but I'm not commenting on durability with that rating. I mounted this to cover a standard 14" square vent in an enclosed car trailer that we camp in sometimes. Installs in about two minutes with just a screwdriver, and it fits over the opening just fine. It is not a blackout curtain, but it cuts WAY down on the light coming through so I think it will help if trying to sleep past sunrise. It isn't heavily built, and hopefully the UV doesn't make the mounting clips brittle. If not, I'm happy for my purposes. It definitely blocks light, so I think it will block some heat also, but that was not my primary reason for buying. Very satisfied overall if it holds up.

This is is the fourth shade I’ve gotten for my RV- now all skylights are covered. They work great and help to cut down on heat from the sun and light at night