The new 40 Series of Premium category with a maximum range of the protective properties of the most common effraction.

4th burglary resistance rating

4th degree of protection

4 crossbars

4 patents

Quattro Series characteristic features

  • A Patented hub serves to protects against a self-impression effraction method (Patent No. PM 100 538).
  • A cut-off toothed hub shuts down the side holes of the keyhole, and restricts a pick-lock access to the levers through the keyhole (Patent No.PM 142635).
  • The lack of the rigid lever springs and the false lock grooves makes the manipulation effraction method more complicated.
  • Protection against drilling out – an inner armor plate that set on the shank of the bolt and outer armor plate, totally thickness no less than 4mm.
  • The smoothness and silence of the girders due to gear and lack of stiff springs of levers.
  • The outer and inner strike plates on the bolt shank (Patent No.PM 137899) protects against the drilling out effraction method.
  • Toothed gear and the lack of a rigid lever spring ensure smooth and quiet crossbars travel. Window-type levers ensure easy key rotation when locking and unlocking and eliminate the the levers overtravel and overhanging.
  • A latch-off from the handle function (Patent No.PM 142627) ensures the lack of lateral pressure on the bolt. In the closed position of the lock, the latch is fixed even if the handle is pressed. The holes for fixing door handles with through-bolts ensure handle easy installation and reliable operation.
  • The removable end plate serves to install the lock using insertion method.

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We sale cylinders series Basic and series Standart
New 60 series Inter — locks popular sizes with the optimum set of protective properties.

A new option for the entrance doors producers.

Since April 2016 Guardian 21.14 and 25.14 Rotor Lock and Maximum Series are delivered completed with a plastic construction masterkey and a control key with the locks.

Please note that since June 2016 Guardian 10th Series locks can be delivered completed with keys with a new tool holder ZK 103-01.