The unique Primus dual-locking design allows all Primus cylinders to achieve the same high degree of pick resistance. But if your installation requires the utmost protection against forceful attack, choose the Primus 20-500 High-Security cylinder.

Hardened, drill-resistant pins - strategically positioned around the cylinder-help safeguard vital internal parts from drilling.

The 20-500 series meets the criteria of Underwriters Laboratories (U. L. 437). Stringent tests for drill and pick resistance.

Often, high-security solutions are unnecessarily complex and expensive. That isn't the case with the Primus system.

Specific high-security locations can choose the series 20-500. If key control is your primary objective, turn to the lower cost Controlled Access series 20-700 cylinder. Or use both cylinders in conjunction with each other in any combination.

The series 20-700 remains fully compatible with the series 20-500. All without sacrificing the performance of your security system. And substantially lowering the cost of your new application or retrofit.