MA91 Large Diameter Double Layer Filter The HM91 is a professional pop filter. It includes double layer filters with Ø185 mm. The bracket pad can protect the microphone from scratches. Its gooseneck diameter is Ø8.5 mm, filter frame Ø185 mm (Ø7.28") and net weight is 0.45 kg (0.9lbs). Double layer ?lter Ø185 mm (Ø7.28") nylon pop screen Bracket pad protects the microphone from scratches
