P3 pre-filter clips over STS gas filters to make a combined particulate and gas filter
Filters 99.95% of particulates.
Mechanical filtration doesn't lose filtration efficiency as it get full or wet.
Filters are water and oil repellent.
Hard casing protects filter material from damage.
Easy to connect, no filter retainers required, they simply clip onto the gas filter.
Pre-filters are limited to single shift use only.
Two required per mask.
Dimensions: 86mm dia x 14.5mm (H), â¤20g
Pack size: 28 pieces/box.
AS/NZS 1716:2012 certified.