3M HF-802SD Secure Click Reusable Half Mask Respirator Speaking Diaphragm MediumCode: 692920000 3M Secure Click Reusable Half Mask Respirator, Speaking Diaphragm, Medium, HF 802SD Size: 125. 0 x 138. 0MM Colour: Grey Each Greater breathability and comfort provided by the worlds first quad flow cartridge system Push button seal check helps bolster confidence that the respirator is properly sealed to the face Speaking diaphragm is designed to help provide easier communication while you work