PAPR with 3M filters
thingiverse
A PAPR device compatible with 4x 3M 7093 filters. 支持4x 3M 7093过滤盒的PAPR设备。 More than 200L/min flow with a 12w 9733 fan. 在12w的9733风扇下，有大于200L每分钟的流量。 Need external pwm speed controller. 需要外部pwm控制器。 LICENSE: WTFPL
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