Compatibility: This CFK4 charcoal filter is compatible with under cabinet stainless steel range hood COS-5MU30 / COS-5MU36 and SNDOAS range hood US0475BPB / US0475NBK. Compare to Part# CFK4. Box Contents: Package includes 2 CFK4 charcoal filter kits. No tools are required for replacement. Made of high quality activated charcoal, it can more effectively remove excess and grease in the kitchen and remove odors. Maintenance: We suggest that you change the charcoal filters every 6 months or according to the frequency of use, so as to maintain the freshness of the air in the kitchen or living room. Compatibility: This CFK4 charcoal filter is compatible with under cabinet stainless steel range hood COS-5MU30 / COS-5MU36 and SNDOAS range hood US0475BPB / US0475NBK. Compare to Part# CFK4. Box Contents: Package includes 2 CFK4 charcoal filter kits. No tools are required for replacement. Made of high quality activated charcoal, it can more effectively remove excess and grease in the kitchen and remove odors. Maintenance: We suggest that you change the charcoal filters every 6 months or according to the frequency of use, so as to maintain the freshness of the air in the kitchen or living room. Color: Black Material: Plastic + Activated Carbon Package Contents: 2 Pack CFK4 Carbon Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.