Amazon.com: Tinker3D Antminer S19 T19 S17 T17 Double Fan Shroud 6 Inch Outlet to 2X 4 Inch Round ASIC Miner Air Cooling Duct 2X 120mm USA Made (1) : Electronics
nVent HOFFMAN HH05GS35001 MCLA Filter Fan Shroud, 10.41 in L x 8.32 in W x 2.32 in THK, Mild Steel | SMC
36 inch Heavy Duty Fan Shroud Filter 12 Count FANSHROUD36HD12– Industrial Fans Direct
High Performance Fan + Shroud Kit 944 All Models
nVent Hoffman HH13SS04004X :: Filter Fan Shroud, NEMA 4/4X :: Gexpro
Fan Shroud Vent Filter Kit, Gray - two pcs
PreVent® Fan Shroud Filter for Back of Fan - Disposable (12 Pack) – Air Filter Hub LLC
24" Hook and Loop Polyester ProFitter® Fan Shroud Filter | Fastenal