This is 4 inch duct adapter for 120mm fans, which help your miner to run quieter and cooler!

Cheaper shipping price for bulk order. Buy more save a lots!

4inch ducting is the most optimal for the most of the miner with 120mm fans since larger ducts requries higher pressure (bigger fans). 

Antminers S9, S11, DR5, S15, T15, Z9 and fit with any 120mm fans. 

**Installation

Unscrew existing fan grids and screw back this adapter! You can place our adapter with the same screw (adapter mount is 2mm thisckness)

Miner and duct are not included. I recommend flexible 4 inch duct from Home depots or Lawes. 

Material: PLA or PETG