Suitable for retail and commercial environments where a fixed dome or fixed box camera needs to be installed under high ceilings, the 2-pack of Axis Communications T91B53 Telescopic Ceiling Mounts work in tandem with compatible pendant kits and camera holders with a 3/4" conduit interface. It is extendable from 3.2 to 6' at 4" intervals. The mount is rated IK08 for protection from impact.