*ALL SALES ARE FINAL. OPEN BOX RETURNS WILL NOT BE ACCEPTED. 

Please select the correct size according to the sizing chart below. NOTE: For proper mask fit, faces must be clean shaven. 

Facial hair, Sideburns, bangs and headwear may prevent a protective facepiece from forming and/or maintaining a tight-fitting seal on someone’s face. It is recommended the user be clean shaven and/or hair pulled back for sizing and using the respirator to ensure an appropriate seal.

To ensure you have selected the correct size you should perform a negative pressure test. The negative pressure test can be performed by putting the mask on your face, breathe out, then block the inhalation valve and take a deep breath. For the FM50 you will need to block both inhalation valves before taking a breath. The mask should collapse to the face. If you experience a tight seal to your face then the mask has the right fit.

*Except in the rare case of defective product. Please contact customer service for further instruction in this instance. 

If you are still unsure of your size or are certain you are going to be in a hazardous environment and need to ensure the most accurate sizing you may purchase a Sizing Tool.