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Frequently Asked Questions

What makes Von Duprin the industry standard?

Von Duprin pioneered panic hardware and remains the specification standard with Grade 1 certification, cycle testing exceeding 2 million operations, and the most comprehensive product line in the industry.

What is the difference between Von Duprin 99 and 98/9947 series?

The 99 series offers rim exit devices for surface-mounted applications, while 98/9947 series provides mortise exit devices with concealed mechanisms. National Lock Supply can help specify the appropriate series.

Are Von Duprin devices compatible with access control?

Yes, National Lock Supply offers Von Duprin electrified exit devices (EL, PS, EPT series) that integrate with card readers and access control systems while maintaining panic egress.

Can Von Duprin exit devices have delayed egress?

Yes, Von Duprin manufactures delayed egress devices holding doors locked 15-30 seconds after activation while sounding alarms, meeting fire codes for high-security applications.

What trim options work with Von Duprin devices?

Von Duprin offers the industry's most extensive exit trim selection including levers, key cylinders, deadbolts, thumbpieces, and electrified options in multiple finishes available through National Lock Supply.

Do Von Duprin devices meet fire codes?

Yes, Von Duprin manufactures fire-rated exit devices tested and labeled for 90-minute to 3-hour fire door assemblies. National Lock Supply stocks devices meeting all fire rating requirements.