Laerdal Pocket Mask W One Way Valve & Filter (w o O2 Inlet) Interferential Stimulators * Telescoping parts are manufactured Ships via truck * Telescoping parts are manufactured with internal bushings and external lock nuts to provide totally silent usage * Easy to use button release allows compact storage * Lightweight aluminum frame is reinforced with saddle formed riveted side supports and weighs under 7 lbs * Weight capacity: 300 lbs Without O2 Inlet * Masks include a one way valve * Prevents mouth to mouth contact with victim's face * Facilitates a patient airway * Combines moderate head tilt jaw lift and opening of the mouth * More effective ventilation through mouth and nose simultaneously leakproof seal * * (Model 8040A): includes an oxygen inlet valve *