Polar Focus® Spine Frame Adapter™ is used for precise control of tilt angle for line arrays with the common fore and aft type line array support. Easy tilt control of line arrays under full load. Adjustment of tilt with accuracy to one tenth of a degree. [break] Designed for either installation or portable use, the Spine Frame Adapter™ provides infinitely adjustable tilt control to a line array with the common front to back spine frame configuration. Combined with a Zbeam product, Polar Focus® Spine Frame Adapter™ allows for pan and tilt of line arrays under full load. [break] This product family provides infinitely adjustable tilt of any line array that has a central spine or points, such as line arrays from EAW, Electro Voice, d&b, JBL, L`Acoustics, and QSC. Line array tilt angle can be dialed up under load even to 1/10 of a degree in accuracy. Spine Frame Adapters also work with line arrays in a pullback configuration, effectively adding 16 inches of depth to your line array frame, while retaining the tilt and pan adjustability. Spine Frame Adapters can also be integrated with a Zbeam top for pan control of a line array, a Motor Zbeam top for a serviceable line array with pan control, a Custom Beam Attachment for a line array under a wood beam, or Wall Mount products. [break] Conforming to the Polar Focus® standard, this product has a 10:1 design factor. [break] Pro audio rigging design, roof attachment, supplemental structure, sales, support and PE stamped drawings in any US State provided by Polar Focus. Call us today for more information at (413) 586-4444.