40mm Black Fan Grill/Guard with Screws + Nuts PC Case Cooling 4-Pack

Can be used with 40mm square cooling fans in 3D printer Stepper Motor, NEMA 17, TEC1-12706 Thermoelectric Peltier Cooler Moule, etc screw nuts mounting kit included. Can be used with 40mm square cooling fans in 3D printer Stepper Motor, NEMA 17, TEC1-12706...