5.2"

Dayton 5Rhu2 Condenser Fan Motor, 1/2 Hp; 1/5 Hp

What I value about FLIR is the accuracy within a few degrees Celsius.

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TB WOOD'S 2BK62 V-Belt Pulley, Detachable, 2Groove, 5.95"OD

For daily operations, the STI-6402 seems to hold up really well over time.

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