Onyx Specialty Papers, Inc. Onyx Specialty Papers Inc. manufactures many specialty paper applications for different products and markets, and also produces Filter Papers for the world's largest suppliers of passive humidifier applications for respiratory care and anesthesia. As their partner, we collaborate in addressing issues of quality when sourcing high performance raw materials and foster new approaches to product development and cost management. These HME papers: -Take care for the control of moisture absorption -Posses strength for processing on today’s high speed automated winding equipment -Flat stock is available in roll widths from 10 mm to 20 mm -Corrugated stock is available in roll widths from 10 mm to 30 mm Other alternative names for these Filter Papers are: Heat and Moisture Absorption Papers, Heat and Moisture Exchange (HME) Papers and Moisture Absorption Papers.