HELIX

Air filtration installations; portable filtration apparatus for filtering air (other than machines); air filtration installations for buildings; air filtration installations for vehicles; air filtration apparatus and machines; all of the aforementioned not related to heating and cooling

Textile materials and fabrics in the nature of wool, woollen cloth, woollen fabric, felt, composite textile materials, non-woven fabrics of natural fibres, non-woven fabrics of synthetic fibres, non-woven textile fabrics, moldable non-woven textile materials, and textile filter materials for use in connection with air filters, air purification filters, air drying filters, airborne dust filters, airborne pollution filters, airborne particle filters, airborne bacteria filters, airborne pollen filters, respirator filters, sleep apnea mask filters, medical mask filters, filters for protective masks