| Comparison : |
Item # MDS1451-24, 5.51 in. (140 mm) MD Series S Type (Standard) Axial Fan (24 VDC)
Item # MDE1451-24L2, 5.51 in. (140 mm) MD Series E Type (Long Life) Axial Fan with Stall Alarm - Electronic (24 VDC)
Item # MDA1451-24, 5.51 in. (140 mm) MD Series A Type (with Alarm) Axial Fan with Low Speed Alarm (24 VDC)
Item # MDA1451-24L, 5.51 in. (140 mm) MD Series A Type (with Alarm) Axial Fan with Stall Alarm (24 VDC)
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