DROP-IN 100gsm FILTERS ONLY - Pack of 7 replacement filter elements for DIY masks - These are double thickness filters compared to the regular 50gsm Helix filters. They will fit in most cloth masks designed to accommodate a replaceable filter and can be cut to size.
HELIX.iso+™ filters are 100gsm and made from natural NZ wool fibre for enhanced protection and may contain organic markings. Any organic markings are harmless and are proof of the filter’s natural origin. They do not affect the performance of the filter.
The HELIX.iso+™ filter can be fitted to most cloth masks and should be replaced as often as possible. All contaminated filter elements must be disposed of safely when replaced and should not be re-used.
When correctly fitted, the mask with a HELIX.iso+™ filter inserted provides excellent protection and comfort to enable prolonged use.
Free PDF download of pattern for making fabric masks and suppliers of masks that fit Helix filters >https://lanaco.co.nz/filters/