The Staco SLS-7000 is a marine fire door lock from Staco, a Korean manufacturer that has been producing fire-rated wall panels, ceiling panels, and marine accommodation hardware since 1992. The company holds around 350 classification-society approvals for its products. The SLS-7000 is purpose-built for ship cabin doors and corridor fire doors that need to meet marine fire-safety and classification requirements.

It's supplied as a mortise lock, typically paired with a handle and either a cylinder key or thumb-turn set, depending on the required door-side operation. The lock is made from marine-grade stainless steel to withstand the humidity and salt exposure common on board vessels. Staco doors and hardware are rated for both B classification, commonly used in cabins, and A classification, used where higher fire protection is required.

Because fire door hardware is inspected as part of classification surveys, using a recognised marine manufacturer with documented approvals can help simplify compliance and inspection requirements. The SLS-7000 is therefore suitable for marine fire door assemblies where reliability, corrosion resistance, and classification compliance are important.