Projecting casement windows open like side-hung windows, but when operated, the rotational axis moves toward the middle, exposing a "cleaning space" between the casement and the jamb.
Projecting casement windows were developed in 1975.
Projecting casement windows open like side-hung windows, but when operated, the rotational axis moves toward the middle, exposing a "cleaning space" between the casement and the jamb.
Projecting casement windows were developed in 1975.