One (Single) Mission 731 Mid/Bass driver 31-LF106 in perfect working and very good physical condition
Found in early/original Mission 731 speakers but is a very common frame size
found in a number of other Mission speakers and many other brands/models
Frame size is (ALL APPROXIMATE) 134mm 'across the flats', 138mm 'corner to corner'
Cutout diameter 124mm, magnet size 70mm
Construction is foam surround and doped cone, thick gasket secured to frame rear
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