Profile: Gretsch-Unitas offers construction fittings and security equipment for windows & doors. Our window technology products include tilt turn fittings, parallel slide and tilt fittings, slide fold fittings, lift slide fittings, horizontal & vertical pivot fittings, turn handles, ventilators & fan light openers. Our parallel slide and tilt fittings without forced control are provided with a closing pressure control to prevent the deflection of the door sash while closing. The stays are connected with a metal rod to allow for even closing pressure over the total width of the door sash. This fitting is suitable for small to medium sized window and door units. Our door technology products include multipoint locks, locks, door furniture, locking cylinders, locking suites, access control, electric door strikes, escape door systems, door closers and swing door drives.