Euro Profile Cylinder Lock Keep – Professional-Grade Security Hardware This boxed keep is engineered for non-fire doors and delivers reliable performance across a wide range of Euro profile cylinders. The design accommodates bolt-through escutcheons for seamless installation, while the solid brass deadbolt ensures durability and corrosion resistance. Ideal for commercial and residential applications where compatibility and longevity matter. A dependable choice for locksmiths and installers seeking quality hardware that meets exacting standards.