Round PFT Filter Kit with Rubber Mouthpiece for SensorMedics, 2200, 2400, 2450, 2800,Vmax, Keystone, I&II,Pail,Cybermedics,Moose,Gould 5004, Jaeger Models 100/CSKit Round Filter and Rubber MouthpieceSKU: 100757NK$282.50PriceShipping Terms PolicyQuantity*Add to CartFilter SpecificationsDEAD SPACE: 53ML RESISTANCE: 45CM/H2O/L/S BACTERIAL EFFICIENCY: >99.99% VIRAL EFF: >99.92%Filter SpecificationsResistance (0.45cm/H2O/L/S) B/V Filter Efficiency > 99.9% Dead Space (53ml) DEHP and Latex Free Nelson Lab Study Results