A unitary electro-optic window assembly (10, 100) comprising: a window element (12, 112) comprising: a first substantially transparent substrate (14, 114) defining a first surface (16, 116), a second surface (18, 118), and a first peripheral edge (20, 120); a second substantially transparent substrate (22, 122) defining a third surface (24, 124), a fourth surface (26, 126), and a second peripheral edge (28, 128), wherein the first and second substantially transparent substrates (14, 114, 22, 122) define a cavity (30, 130) therebetween; and an electro-optic medium (32, 132) at least partially filling the cavity (30, 130) and configured to reduce light transmissivity of the window element (12, 112); a controller (34, 134) adjacent to the window element (12, 112) and in electrical communication therewith, the controller (34, 134) configured to change a voltage applied to the electro-optic medium (32, 132) to change the light transmissivity of the window element (12, 112); an interface (46, 146) in electrical communication with the controller (34, 134); a transparent dust cover (42, 142) positioned over the window element (12, 112), the controller (34, 134), and the interface (46, 146); and a frame (70, 170) disposed about a periphery of the window element (12, 112) that is configured to abut the transparent dust cover (42, 142). a window element (12, 112) comprising: a first substantially transparent substrate (14, 114) defining a first surface (16, 116), a second surface (18, 118), and a first peripheral edge (20, 120); a second substantially transparent substrate (22, 122) defining a third surface (24, 124), a fourth surface (26, 126), and a second peripheral edge (28, 128), wherein the first and second substantially transparent substrates (14, 114, 22, 122) define a cavity (30, 130) therebetween; and an electro-optic medium (32, 132) at least partially filling the cavity (30, 130) and configured to reduce light transmissivity of the window element (12, 112); a first substantially transparent substrate (14, 114) defining a first surface (16, 116), a second surface (18, 118), and a first peripheral edge (20, 120); a second substantially transparent substrate (22, 122) defining a third surface (24, 124), a fourth surface (26, 126), and a second peripheral edge (28, 128), wherein the first and second substantially transparent substrates (14, 114, 22, 122) define a cavity (30, 130) therebetween; and an electro-optic medium (32, 132) at least partially filling the cavity (30, 130) and configured to reduce light transmissivity of the window element (12, 112); a controller (34, 134) adjacent to the window element (12, 112) and in electrical communication therewith, the controller (34, 134) configured to change a voltage applied to the electro-optic medium (32, 132) to change the light transmissivity of the window element (12, 112); an interface (46, 146) in electrical communication with the controller (34, 134); a transparent dust cover (42, 142) positioned over the window element (12, 112), the controller (34, 134), and the interface (46, 146); and a frame (70, 170) disposed about a periphery of the window element (12, 112) that is configured to abut the transparent dust cover (42, 142).