My mobile home has double windows. Looks impressive but they are leaky. There is no outside trim, just cut ends of the vinyl siding. Those ends are wide open. Windows sweat, have light case of green algae on inside where I can’t reach. Going to get Chris over here some day to remove bottom inside windows so I can clean them all. Inside windows have ridiculous little tabs to stick fingertips in, push on tabs while lifting windows. They are just wide enough to make it difficult. I’m thinking a couple of pieces of wood, dowel pin on one end for stupid tabs, handle on other for my tab pushing, window lifting pleasure.