2 Pack Procraft LHD004 Piezo Horn Driver 150 Watts RMS 1-3/8"-18 TPI Threads Studio Wall Mount AV Panels 28 Total length per rail is

Total length per rail is 5-1/4"

one locking 1/4" parallel output and one balanced male XLR output with a ground lift switch

All 6 connectors are on one side

Inside dimensions are: 19-1/8" Wide x 3-5/8" Tall x 16" Deep

1) PROCRAFT steel reinforced strap handle with T-nuts and machine screws            8) PROCRAFT Protective Nylon Corners

2 Pack Procraft LHD004 Piezo Horn Driver 150 Watts RMS 1-3/8"-18 TPI Threads Studio Wall Mount AV Panels 28 Total length per rail is2 Pack Procraft Piezo horn driver, frequency is 3. 5K 20Khz, sensitivity is 93dB and 150 watts RMS. Screw on 1 3 8" 18 TPI threads. Dimensions are 4" diameter x 2 1 2" depth. Also available in singles and 4 packs.