Upgrade your CPAP therapy with high-efficiency filtration for sensitive airways. Designed for the Lowenstein Prisma 20A, this allergy/pollen filter captures finer particles than standard filters, including pollen and airborne allergens, helping reduce nasal irritation and improve comfort during therapy. Ideal for patients with hay fever or dust sensitivity. Replace regularly (typically every 1–2 months or sooner in high-allergen environments) to maintain optimal performance.