Most are DELTA brand, some are NIDEC. 

Fans are 60mm x 60mm x 25 mm in size and work on all Antminer PSUs such as APW3, APW7, APW12, APW17 etc. 

The listing is a set of 3 fans. All fans are Q/C tested to be working. 

Ships within 1 business day from St. Louis, USA. 

Keywords: Antminer S9, S17, S19, S21, S21 Pro, S21 XP