OA172SAP-22-1TBIP55 - 

Life Expectancy:
Dual Ball bearing fans will run continuously and reliably for up to 60,000+ hours based on L10 calculations. L10 life for sleeve bearing fans is up to 30,000 hours and sealed sleeve over 50,000 hours. Life will vary depending on the fan size and operating conditions and temperature.

Frames:
AC Fans — Diecast Aluminum
DC Fans — UL 94 V-0 glass fiber reinforced plastic is standard for frame sizes 120 mm and smaller. Aluminum frames are standard for 127 mm and larger. 120 mm frames are available in both plastic and aluminum.