Adaptive Technologies MM-019-BT - Pan / Tilt Speaker Ceiling MountThe MM 019 is a pan and tilt speaker mount that supports and aims cinema surround speakers equipped with the standard four point mounting pattern of 2. 6 x 2. 6" and 1. 6 x 1. 6". This mount aims and anchors surround speakers from overhead ceiling mounts and strut by way of ceiling plates, a variety of pipe extensions and strut adapters. Ceiling surrounds achieve up to 360 degrees of horizontal pan angle adjustments and up to 180 degrees of tilt angle