The JR is a lightweight basic projector mount that features two points of adjustment for both pitch and roll, which simplifies the alignment of projectors weighing less than 50 pounds. A pre-assembled, two-piece design with integrated cord management and 1.5” NPT compatibility enables pre-wiring for a quick and easy installation. A universal design facilitates hole patterns up to 380 millimeters in diameter. It offers an intuitive quick release mechanism and lists for $99.
The JR2 is a mid-level, two-piece projector mount that features heavy-duty all steel construction in a low profile, pre-assembled package. Twelve adjustment points are included — six for pitch and six for roll to ensure that even heavier projectors or those mounted off-center of gravity stay in place without slipping after installation. A universal design fits hole patterns up to 460 millimeters in diameter and a click-in-place quick release allows easy removal for projector bulb replacement without losing preset picture adjustments. It can handle projectors up to 70 pounds and lists for $117.
Crimson’s JR3 allows for precise adjustments without the use of tools. A unique lead screw mechanism ensures precise adjustments; simply rotate the large, easy to grip knobs to make all necessary adjustments during installation. Heavy-duty construction makes JR3 SyncPro ideal for larger projectors and/or those with an off-center lens, and a universal design fits hole patterns up to 380 millimeters in diameter. Additional legs expand the range to cover any large or irregular mounting hole patterns, and an intuitive quick release mechanism enables easy removal for projector bulb replacement without losing preset picture adjustments. It lists for $169 and can handle up to 70 pounds.
Here are all the specs: http://www.crimsonav.com