Abstract: A sash assembly with a built-in blind wherein, upon modification of the existing fixed sash window to such a sash assembly with a built-in blind, the existing window frame can be utilized as it is without having to dismantle it, and which has an extremely simple construction and whereby the existing fixed sash window can be modified to a fixed sash window with a built-in blind at a low cost.

Abstract: A screen unit with a built-in blind, capable of being mounted on an existing sash at a low cost through simple work. The screen unit comprises: a rectangular unit frame consisting of an upper horizontal frame member, a lower horizontal frame member, a right vertical frame member and a left vertical frame member; an outdoor side glass panel fixedly attached to the outdoor side of the unit sash; an indoor side glass panel member detachably attached to the indoor side of the unit sash; and elongate projections formed integrally respectively with the horizontal and vertical frame members so as to extend along and project from the respective outer surfaces of the corresponding horizontal and vertical frame members, for connection to an existing sash.