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Hardware Products

MORTISE DOOR LOCKS AND CYLINDERS

Accessories for extending thumb turn cylinders

All Viro thumb turn cylinders (700, 900, New Euro-Pro and Viro Palladium series) are easy to extend on the thumb turn side to make them suitable for fitting to especially thick doors (e.g. armoured doors, fire doors, etc.).

  • The chromed steel extension, supplied with a grub screw, is fitted as follows: the end with the bigger diameter is fitted to the shaft which usually takes the thumb turn; the other end, with the thumb turn removed, can be machined to the length required and fitted with one of the thumb turns shown in the table.

ACCESSORIES FOR EXTENDING THUMB TURN CYLINDERS
Item

DescriptionPcs. per pack

No.

No.

  3989Extension for thumb turn side6
  3989.0065.046Item composed of extension and polished brass escutcheon6
  3989.0065Item composed of extension silverplated aluminum escutcheon6
  740.0850.1.013Polished brass oval thumb turn6
  740.0850.1.009Nickel-plated brass oval thumb turn6
  740.0850.2.013Polished brass round thumb turn6
  740.0850.2.009Nickel-plated aluminium round thumb turn6