“Made in Canada mask filters using top-quality Filti filter material from the USA.
Filti Face Mask Nonwoven Filter Material is engineered and manufactured in the USA using patent-pending Nanofiber technology. Filti is breathable and highly-efficient: 86-95% on sub-micron particles.
Fits any face mask with pocket. 3.25 x 4.75″ is the same size as standard PM 2.5. For the child’s size, trim the material with scissors.
Filti’s nonwoven/nanofiber / 3-layer spunbond construction exceeds standard cloth and fabric materials in filtration efficiency. Filti filters 86-95% of 0.3-micron particles per TSI 8130 test standard. In contrast, competitor PM2.5’s are only designed for large 2.5-micron dust particles.