a oah section a oah boom 1/2 13 mm plate section a zra1 10 254 mm zrs2 10 ... 254 mm ref zra1 6 152.4 mm ref zrs2 7 177.8 mmboom 5/8 16 mm ... plate section a zra2 12 304.8 mm zrs3 12 304.8 mm ref zra2 8 203.2 mm ... ref zrs3 8 203.2 mm oah overall height u underclearance ... zra2 and zrs3 zra1 boom type wall mount light part no ft 7100ja1w04 7100ja1w06 ... 7016ja1w20 4 6 8 10 12 14 16 18 20 boomm 1.22 1.83 2.44 3.05 3.66 4.27 4.88 5.49 ... .9 226.8 163.3 117.9 90.7 72.6 oah in mm 44 44 44 44 44 44 44 44 44 11181118 ... 1118111811181118111811181118 weight lbs kg 120 131 142 153 164 175 ... 5 89.5 94.5 part no zra2 boom type wall mount heavy boom ft 7200ja2w04 7200ja2w06 ...