Q I have a 44mm thick 30 minute fire door and I am considering using a concealed indoor closer. I am concerned that the closer body shadow will show through the light coloured veneer on such a thin door. Can I fit a concealed closer into the frame rather than the door leaf?
A Yes, it is mechanically possible to install the closer body into the frame with the guide rail arm into the door leaf. However, specific fire test evidence is required to cover this application. The GEZE BOXER series has undergone independent testing in this exact application. Certifire certificate CF242 includes the scope for the body to be fitted in the frame and guide rail in the door leaf in a single action configuration for BOXER EN 2-4, BOXER EN 3-6 and BOXER EFS EN 4.We also offer the GEZE INVERS transom closer series for double action fire rated doors.
Q Can I install the GEZE manual sliding door systems externally? I am concerned about corrosion.
A The standard GEZE manual sliding door systems are designed for internal dry areas only. However the PERLAN KS system is specifically designed for harsh environments such as external use. Tested to the highest corrosion class (Class 4 to EN 1670) in accordance with EN 1527, PERLAN KS provides the best possible solution for external use. For heavy duty industrial applications, the GEZE APOLL series with galvanised components is ideal for external
In this regular feature, you can put your questions to GEZE’s technical team. Simply email firstname.lastname@example.org or write to access TechTalk, GEZE UK, Fradley Park, Lichfield, Staffordshire WS13 8SY.