) to the center of the light bulb

92 inches) fully unfolded (each frame is approximately 25 cm (9

ensuring it always sits perfectly straight

Bakelite central insert

also known as Ferlins

Ringklockeknapp - Mässing Tillflager ) to the center ofLength: 68 mm (2. 68 in.) Width: 25 mm (0. 98 in.) Depth (including button): 23 mm (0. 91 in.) Center to center between screw holes (c c): approx. 40 mm (1. 57 in.) The back builds 20 mm (0. 78 in.) into the wall door, and a hole with a diameter of at least 19 mm (0. 75 in.) is required behind the push button. Two brass screws for the mounting are included. Used together with a doorbell and doorbell transformer for a complete installation. Doorbell