The need for controlling high level ventilation in buildings is universally appreciated, and wherever out of reach ventilators are incorporated there is a requirement for simple, economic and unobtrusive type of gear.

The Teleflex system is based upon a unique form of cabling having an over-wound helix wire to form a flexible rack. This cable, enclosed in a rigid conduit, engages a suitably hobbed wheel in the operator and head unit, where in a push pull action, imparted by rotation of the handle, drives the mechanism to open and close ventilators.

Teleflex Gearing is installed after the completion of the Patent Glazing.
The gearing is face-fixed to finished surfaces, which must be fully decorated prior to installation.
Safe access must be provided to allow the cable to run between the bottom of the ventilators and the pre-determined operating handle positions.