All window manufacturers hand their product as viewed from exterior. If hinge is on left from exterior: left hand window unit. If hinge is on right from exterior: right hand window unit. An easy way to hand windows from the inside (where we are most of the time) is to look at what side the lock is on for the window that needs the new operator. If the lock is on the left from the inside then the hinge is on the left from exterior and it is a left hand window unit. If lock is on the right from inside then the hinge is on the right from the exterior and it is a right hand window unit.
- Works with Perma-Shield Casement Windows manufactured from May 1974 to 1995. | This operator fits windows with a visible glass dimension width of 16-1/8". Andersen CN Size Width | Includes nylon shoe, cover and screws. | replaces previous vintage operators with series numbers 7198-17, 1818-2, or 7191 | This #7191-32 Amerock Operator has been upgraded with corrosion resistant components