You either love or hate these! The main negative comment is "too boxy". They are a type of venetian but there are no open slats as such. The blinds are cord operated. Depending on position you get almost total dark or see through for day use. You can have a bit of both to just semi darken your motorhome. Costs work out about $369.00 extra per window. (Winnebago pricelist March 2003)