In addition to building entrance doors, mortise locks are commonly found on which other door type?

• A. Storage cabinets
• B. Office doors
• C. Vehicle doors
• D. Exterior gates

Answer: (B)

Mortise locks are built into a pocket carved into the door, allowing a single lock body to control both the latch and a deadbolt, and they’re designed for heavy use and more secure, integrated hardware. In commercial settings, interior office doors benefit from this robustness and the ability to work with various handles and access-control systems, making these locks a common choice besides building entrance doors. Storage cabinets typically use smaller, simpler locks; vehicle doors use automotive lock systems; exterior gates often rely on padlocks or specialized gate hardware. So office doors fit best because they require stronger, more versatile locking hardware for frequent use and security.