Prime-Line Ellipse Dyad Window Operator by Truth, Right Hand

This is a Truth Ellipse right-handed Dyad operator with a baked enamel bronze finish. It is made of heavy-duty diecast zinc. The steel arm, worm drive and gears are protected with a corrosive resistant finish and it opens to a full 90°. Jointed arm assembly has a clip that fastens onto a stud bracket located on the casement sash. When installing, the housing easily fastens down to the window sill.