Round Mortice Cylinder Thumbturn
Round Mortice Cylinder Thumbturn

Round Mortice Cylinder Thumbturn

Alpro’s cylinder range compliments the Alpro lock range and is available in a number of finishes, along with various key options to enable the customer to choose the required system that best suits the application in question.

The round mortice cylinder thumbturn is an alternative to using a pair of mortice cylinders.


  • Standard keyways
  • Range of finishes
  • 15/32” standard cylinder
  • 3 Year Guarantee

  • Specification
  • Order info
  • Documents
  • FAQs


Complete with its own turn the unit can be fitted to the internal side of the door giving easy exit from inside whilst maintaining the security and controlled access from the external side.

Order info

CodeDescriptionFor use withFinish
5228Round mortice cylinder - keyed to differ1820/1850/4510Satin
5228-TRIMTrim ring - round mortice cylinder1820/1850/4510Satin
5228X Round mortice cylinder - keyed to differ1820/1850/4510Satin
5229Round mortice cylinder - keyed to pass1820/1850/4510Satin
5229XRound mortice cylinder - keyed to pass - 6 pack1820/1850/4510 Satin
5230Round mortice thumbturn1820/1850/4510Satin
5231Round mortice cylinder guard1820/1850/4510Satin
5241Pair of 5228 round mortice cylinders complete with 2 keys 1820/1850/4510Satin
5242Round mortice cylinder - trim ring 1.5mm thick5228/5229/5230Satin
5243Round mortice cylinder - trim ring 2.5mm thick5228/5229/5230Satin
5244Round mortice cylinder - trim ring 3mm thick5228/5229/5230Satin
5247Key blankRound cylinders


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Is there a charge for delivery?

Carriage and packing are included in orders over £250.00. A charge of £10.00 is made on lower value orders to cover carriage, packing and insurance. For deliveries to Ireland please speak to the office for pricing.

How many spare keys are with the round mortise cylinders?

2 keys.

Do you have any information on CE Marking or CE Marking of Doorsets?

Please refer to our technical section under Standards.


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