This 2 piece set of filter mask cartridges are made to use with dust masks that use round filters in size 2 3/4 inches diameter. These filters are for spray painting, gardening, and other low toxic applications. Not intended for heavy toxic gases or for use in low oxygen situations.

* Filters provide protection from breathing in particles in the air - great for low toxicity vapour

* They are excellent for allergy sufferers - stops pollen from reaching your nose

* Very lightweight - each filter weighs less than 1-1/2 ounces - ideal for spray painters

* You can use these filters when you clean the house for dust sensitivity allergies

* These filters can be used in dust mask assemblies that use round 2-3/4 inch filters