Your windows should enhance your view, not hinder it with unnecessary hardware. Our Viwinco patented Tilt-n-Lock technology provides an unobtrusive solution to window operation, standard on Cambridge, S-Series and OceanView hung windows. The Viwinco patented Tilt-n-Lock technology revolutionizes window operation on hung windows. While housing the locking mechanism in the meeting rail of the sash, the Tilt-n-Lock does away with traditional tilt latches in favor of single-handed operation through the use of the locking mechanism. The three locking positions are used to indicate the status of the window. At the 0-degree position, the sash is securely locked, and the tilt latches are tightly secured into the jambs. At 150-degrees, the tilt latches are still engaged in the jambs, but the sashes are unlocked allowing the sash to be lifted. At 180-degrees the hidden tilt latches are disengaged from the jambs allowing tilt in window operation for easy maintenance.