Not a design template 8 inch (200mm) fan cover for all Antminer S19 and S21 models with 2 x 120mm fans not suitable for S21+ / PRO / XP, these miners have 2 x 140mm fans, we also have the fan covers for them in the shop perfect for mounting an 8 inch (200mm) hose on the intake or exhaust side get the cold air for suction from one place and direct the warm exhaust air to the desired destination printed with PETG, very high quality and solid material (approx. 300g heavy) Suitable for all ASICs with 2 x 120mm fans (also other models from Bitmain)