Insert the viewer into the hole then screw the two sides together and tighten by hand. The viewing tube is somewhat larger than many other standard peephole viewers, offering a better field of view. You can apply a thin coat of silicon sealant to the inside and outside flanges before installing the unit, to help keep moisture out.

Wide angle ultra clear view for all-around visibility. Lens Arrangement View Protect outsiders observing any movements inside. Unique Spiritual design, Superior finish. Easy to install with the built-in variable length screw for 35 mm thick doors. For Additional information regarding the product, please contact with Dubuy support team.