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Astra handing definition - Which side of the door is the outside?

What do the Astra lock product codes mean?

ASTRA LOCK MB425-100SC

Product Code: 05160083

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Description

Astra MB-Series short backset, brass body storeroom vestibule mortice lock.

  • Backset: 25.5 mm.
  • Bolt projection: 14 mm.
  • Metal door fixing.
  • Re-handable.
  • 1 cylinder.
  • No escutcheon.
  • No turnsnib function.

notes-icon Ascot/Rondo plates
Escutcheon not required when using Ascot/Rondo plates.

Storeroom vestibule function

  • Mini bolt deadlatching.
  • Latchbolt retracts by inside lever and outside cylinder.
  • Inside lever is always free.
  • Outside lever is always rigid

Supplied body only in satin chrome.

Technical Specifications
Brand ASTRA
Finish Satin Chrome
Lock Pitch In mm 90.25
Backset 25.5 mm
Handing Non-handed
Lockbody Has Turnsnib Hub Yes
Turnsnib Hub Spindle Type 4.5mm Square

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