These fan shrouds fit the new A100/CMP170HX they are designed for lots of air flow with several sizes to choose from. I'm not currently including fans with these shrouds. Fans will easily screw into the shrouds which mount to the back of the card once the metal retaining bracket is removed. The same thumb screws can be used to secure the fan shroud.
The 140 is big enough to house a Whatsminer 140mm 6000 RPM fan should you want to put one of those beasts on it, but any 140mm fan will work and give you decent airflow.
The 120 fits a standard 120mm case fan which can also come in a large variety of speeds and decibel levels.
The 50 uses two 50mm fans and is significantly smaller than the other models.
The 40 uses three 40mm fans.
The Server 40 requires a single high speed server fan.
The 140 is 142x142(153)x93mm, 120 is 120x120(128)x73mm, 50 is 102x52(67)x44mm , the triple 40 is 122x42(56)x34mm, and the Server 40 is 100x42(57)x40mm numbers in () are total width including the mounting plate, without () is the base.
Message me for large orders, most shrouds will be printed to order.